├── .gitignore ├── .idea ├── compiler.xml ├── copyright │ └── profiles_settings.xml ├── dictionaries │ └── lichenwei.xml ├── gradle.xml ├── inspectionProfiles │ ├── Project_Default.xml │ └── profiles_settings.xml ├── misc.xml ├── modules.xml ├── runConfigurations.xml └── vcs.xml ├── README.md ├── app ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ ├── androidTest │ └── java │ │ └── com │ │ └── lcw │ │ └── viewpagertriangleindicator │ │ └── ExampleInstrumentedTest.java │ ├── main │ ├── AndroidManifest.xml │ ├── java │ │ └── com │ │ │ └── lcw │ │ │ └── viewpagertriangleindicator │ │ │ ├── MainActivity.java │ │ │ ├── SimpleFragmet.java │ │ │ └── ViewPagerTriangleIndicator.java │ └── res │ │ ├── layout │ │ └── activity_main.xml │ │ ├── mipmap-hdpi │ │ └── ic_launcher.png │ │ ├── mipmap-mdpi │ │ └── ic_launcher.png │ │ ├── mipmap-xhdpi │ │ └── ic_launcher.png │ │ ├── mipmap-xxhdpi │ │ └── ic_launcher.png │ │ ├── mipmap-xxxhdpi │ │ └── ic_launcher.png │ │ ├── values-w820dp │ │ └── dimens.xml │ │ └── values │ │ ├── attr.xml │ │ ├── colors.xml │ │ ├── dimens.xml │ │ ├── strings.xml │ │ └── styles.xml │ └── test │ └── java │ └── com │ └── lcw │ └── viewpagertriangleindicator │ └── ExampleUnitTest.java ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat ├── screenshot └── ViewPagerTriangleIndicator.gif └── settings.gradle /.gitignore: -------------------------------------------------------------------------------- 1 | *.iml 2 | .gradle 3 | /local.properties 4 | /.idea/workspace.xml 5 | /.idea/libraries 6 | .DS_Store 7 | /build 8 | /captures 9 | .externalNativeBuild 10 | -------------------------------------------------------------------------------- /.idea/compiler.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | -------------------------------------------------------------------------------- /.idea/copyright/profiles_settings.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | -------------------------------------------------------------------------------- /.idea/dictionaries/lichenwei.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | -------------------------------------------------------------------------------- /.idea/gradle.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 17 | 18 | -------------------------------------------------------------------------------- /.idea/inspectionProfiles/Project_Default.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 10 | -------------------------------------------------------------------------------- /.idea/inspectionProfiles/profiles_settings.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 7 | -------------------------------------------------------------------------------- /.idea/misc.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 19 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | Android 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 62 | 63 | $USER_HOME$/.subversion 64 | 65 | 66 | 67 | 68 | 69 | 70 | 75 | 76 | 77 | 78 | 79 | 80 | -------------------------------------------------------------------------------- /.idea/modules.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | -------------------------------------------------------------------------------- /.idea/runConfigurations.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 11 | 12 | -------------------------------------------------------------------------------- /.idea/vcs.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # ViewPagerTriangleIndicator 2 | 自定义ViewPager三角形指示器,博客讲解请见:[Android开发之自定义ViewPager三角形指示器](http://www.jianshu.com/p/51c2557a241b) 3 | ## 效果图 4 | ![image](https://github.com/Lichenwei-Dev/ViewPagerTriangleIndicator/blob/master/screenshot/ViewPagerTriangleIndicator.gif) 5 | ## 用法 6 | 1、复制ViewPagerTriangleIndicator类到项目里
7 | 2、复制values文件夹下的attr.xml到项目里
8 | 3、演示代码
9 | 10 | ``` 11 | 18 | 19 | 23 | ``` 24 | 25 | ``` 26 | //设置指示器标题(mTitles为一个List集合) 27 | mViewPagerTriangleIndicator.setPageTitle(mTitles); 28 | //绑定ViewPager 29 | mViewPagerTriangleIndicator.setViewPagerWithIndicator(mViewPager); 30 | ``` 31 | 32 | 详细信息请参考Demo,注释很全。 33 | -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | android { 4 | compileSdkVersion 25 5 | buildToolsVersion "25.0.2" 6 | defaultConfig { 7 | applicationId "com.lcw.viewpagertriangleindicator" 8 | minSdkVersion 16 9 | targetSdkVersion 25 10 | versionCode 1 11 | versionName "1.0" 12 | testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" 13 | } 14 | buildTypes { 15 | release { 16 | minifyEnabled false 17 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 18 | } 19 | } 20 | } 21 | 22 | dependencies { 23 | compile fileTree(dir: 'libs', include: ['*.jar']) 24 | androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', { 25 | exclude group: 'com.android.support', module: 'support-annotations' 26 | }) 27 | compile 'com.android.support:appcompat-v7:25.3.1' 28 | testCompile 'junit:junit:4.12' 29 | } 30 | -------------------------------------------------------------------------------- /app/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # By default, the flags in this file are appended to flags specified 3 | # in /Users/lichenwei/Library/Android/sdk/tools/proguard/proguard-android.txt 4 | # You can edit the include path and order by changing the proguardFiles 5 | # directive in build.gradle. 6 | # 7 | # For more details, see 8 | # http://developer.android.com/guide/developing/tools/proguard.html 9 | 10 | # Add any project specific keep options here: 11 | 12 | # If your project uses WebView with JS, uncomment the following 13 | # and specify the fully qualified class name to the JavaScript interface 14 | # class: 15 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 16 | # public *; 17 | #} 18 | -------------------------------------------------------------------------------- /app/src/androidTest/java/com/lcw/viewpagertriangleindicator/ExampleInstrumentedTest.java: -------------------------------------------------------------------------------- 1 | package com.lcw.viewpagertriangleindicator; 2 | 3 | import android.content.Context; 4 | import android.support.test.InstrumentationRegistry; 5 | import android.support.test.runner.AndroidJUnit4; 6 | 7 | import org.junit.Test; 8 | import org.junit.runner.RunWith; 9 | 10 | import static org.junit.Assert.*; 11 | 12 | /** 13 | * Instrumentation test, which will execute on an Android device. 14 | * 15 | * @see Testing documentation 16 | */ 17 | @RunWith(AndroidJUnit4.class) 18 | public class ExampleInstrumentedTest { 19 | @Test 20 | public void useAppContext() throws Exception { 21 | // Context of the app under test. 22 | Context appContext = InstrumentationRegistry.getTargetContext(); 23 | 24 | assertEquals("com.lcw.viewpagertriangleindicator", appContext.getPackageName()); 25 | } 26 | } 27 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | -------------------------------------------------------------------------------- /app/src/main/java/com/lcw/viewpagertriangleindicator/MainActivity.java: -------------------------------------------------------------------------------- 1 | package com.lcw.viewpagertriangleindicator; 2 | 3 | import android.os.Bundle; 4 | import android.support.v4.app.Fragment; 5 | import android.support.v4.app.FragmentPagerAdapter; 6 | import android.support.v4.view.ViewPager; 7 | import android.support.v7.app.AppCompatActivity; 8 | 9 | import java.util.ArrayList; 10 | import java.util.Arrays; 11 | import java.util.List; 12 | 13 | /** 14 | * ViewPgaer三角形指示器演示 15 | * Create by: chenwei.li 16 | * Date: 2017/7/16 17 | * Time: 下午1:54 18 | * Email: lichenwei.me@foxmail.com 19 | */ 20 | public class MainActivity extends AppCompatActivity { 21 | 22 | private ViewPager mViewPager; 23 | private ViewPagerTriangleIndicator mViewPagerTriangleIndicator; 24 | 25 | private List mTitles = Arrays.asList("新闻", "音乐", "游戏"); 26 | private List mFragments = new ArrayList(); 27 | 28 | @Override 29 | protected void onCreate(Bundle savedInstanceState) { 30 | super.onCreate(savedInstanceState); 31 | setContentView(R.layout.activity_main); 32 | mViewPager = (ViewPager) findViewById(R.id.vp_main_content); 33 | mViewPagerTriangleIndicator = (ViewPagerTriangleIndicator) findViewById(R.id.vpti_main_tab); 34 | //创建Fragment 35 | for (String title : mTitles) { 36 | SimpleFragmet simpleFragmet = SimpleFragmet.newInstance(title); 37 | mFragments.add(simpleFragmet); 38 | } 39 | //设置指示器标题 40 | mViewPagerTriangleIndicator.setPageTitle(mTitles); 41 | //绑定ViewPager 42 | mViewPagerTriangleIndicator.setViewPagerWithIndicator(mViewPager); 43 | 44 | //设置适配器 45 | mViewPager.setAdapter(new FragmentPagerAdapter(getSupportFragmentManager()) { 46 | @Override 47 | public Fragment getItem(int position) { 48 | return mFragments.get(position); 49 | } 50 | 51 | @Override 52 | public int getCount() { 53 | return mFragments.size(); 54 | } 55 | }); 56 | 57 | } 58 | } 59 | -------------------------------------------------------------------------------- /app/src/main/java/com/lcw/viewpagertriangleindicator/SimpleFragmet.java: -------------------------------------------------------------------------------- 1 | package com.lcw.viewpagertriangleindicator; 2 | 3 | import android.os.Bundle; 4 | import android.support.annotation.Nullable; 5 | import android.support.v4.app.Fragment; 6 | import android.text.TextUtils; 7 | import android.util.TypedValue; 8 | import android.view.Gravity; 9 | import android.view.LayoutInflater; 10 | import android.view.View; 11 | import android.view.ViewGroup; 12 | import android.widget.TextView; 13 | 14 | /** 15 | * 简单用来展示ViewPager里内容的Fragment 16 | * Create by: chenwei.li 17 | * Date: 2017/7/16 18 | * Time: 下午1:54 19 | * Email: lichenwei.me@foxmail.com 20 | */ 21 | 22 | public class SimpleFragmet extends Fragment { 23 | 24 | public static final String TITLE = "title"; 25 | 26 | public static SimpleFragmet newInstance(String title) { 27 | 28 | Bundle args = new Bundle(); 29 | args.putString(TITLE, title); 30 | SimpleFragmet fragment = new SimpleFragmet(); 31 | fragment.setArguments(args); 32 | return fragment; 33 | } 34 | 35 | @Nullable 36 | @Override 37 | public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { 38 | Bundle bundle = getArguments(); 39 | if (bundle != null) { 40 | String title = bundle.getString(TITLE); 41 | if (!TextUtils.isEmpty(title)) { 42 | TextView textView = new TextView(getContext()); 43 | textView.setText(title); 44 | textView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 30); 45 | textView.setGravity(Gravity.CENTER); 46 | return textView; 47 | } 48 | } 49 | return super.onCreateView(inflater, container, savedInstanceState); 50 | } 51 | } 52 | -------------------------------------------------------------------------------- /app/src/main/java/com/lcw/viewpagertriangleindicator/ViewPagerTriangleIndicator.java: -------------------------------------------------------------------------------- 1 | package com.lcw.viewpagertriangleindicator; 2 | 3 | import android.content.Context; 4 | import android.content.res.TypedArray; 5 | import android.graphics.Canvas; 6 | import android.graphics.Color; 7 | import android.graphics.Paint; 8 | import android.graphics.Path; 9 | import android.support.v4.view.ViewPager; 10 | import android.util.AttributeSet; 11 | import android.util.DisplayMetrics; 12 | import android.util.TypedValue; 13 | import android.view.Gravity; 14 | import android.view.View; 15 | import android.view.WindowManager; 16 | import android.widget.LinearLayout; 17 | import android.widget.TextView; 18 | 19 | import java.util.List; 20 | 21 | /** 22 | * 自定义ViewPager指示器(三角形) 23 | * Create by: chenwei.li 24 | * Date: 2017/7/16 25 | * Time: 下午1:39 26 | * Email: lichenwei.me@foxmail.com 27 | */ 28 | 29 | public class ViewPagerTriangleIndicator extends LinearLayout { 30 | 31 | private int mTriangleWidth;//三角形底边宽 32 | private int mTriangleHeigh;//三角形高度 33 | private int mTriangleInitPos;//三角形起始点 34 | private int mTriangleMoveWidth;//三角形移动偏移 35 | private int DEFAULT_TRIANGLE_WIDTH = getScreenWidth() / 3 / 6;//最大三角形底边宽度 36 | 37 | private Paint mPaint; 38 | private Path mPath; 39 | 40 | private int mVisibleTabNum;//最大可显示Tab数量值 41 | private static final int VISIBLE_COUNT_NUM = 4;//默认可显示的TAB数量为4个 42 | 43 | private List mTitles;//保存指示器标题 44 | 45 | 46 | private ViewPager mViewPager;//次有外部ViewPager引用 47 | private AddPageChangeListener mAddPageChangeListener; 48 | 49 | public ViewPagerTriangleIndicator(Context context) { 50 | super(context, null); 51 | } 52 | 53 | public ViewPagerTriangleIndicator(Context context, AttributeSet attrs) { 54 | super(context, attrs); 55 | initAttr(context, attrs); 56 | initPaint(); 57 | } 58 | 59 | /** 60 | * 获取自定义属性值(获取xml设置最大可见Tab数量) 61 | * 62 | * @param context 63 | * @param attrs 64 | */ 65 | private void initAttr(Context context, AttributeSet attrs) { 66 | TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.ViewPagerTriangleIndicator); 67 | if (typedArray != null) { 68 | mVisibleTabNum = typedArray.getInt(R.styleable.ViewPagerTriangleIndicator_visible_tab_num, VISIBLE_COUNT_NUM); 69 | } 70 | } 71 | 72 | /** 73 | * 初始化画笔 74 | */ 75 | private void initPaint() { 76 | mPaint = new Paint(); 77 | mPaint.setColor(Color.parseColor("#FFFFFF")); 78 | mPaint.setAntiAlias(true); 79 | mPaint.setStyle(Paint.Style.FILL); 80 | } 81 | 82 | /** 83 | * 初始化三角形 84 | */ 85 | private void initTriangle() { 86 | mPath = new Path(); 87 | mPath.moveTo(0, 0); 88 | mPath.lineTo(mTriangleWidth, 0); 89 | mPath.lineTo(mTriangleWidth / 2, -mTriangleHeigh); 90 | mPath.close(); 91 | } 92 | 93 | 94 | /** 95 | * 当布局大小发生变化时回调 96 | * 97 | * @param w 98 | * @param h 99 | * @param oldw 100 | * @param oldh 101 | */ 102 | @Override 103 | protected void onSizeChanged(int w, int h, int oldw, int oldh) { 104 | super.onSizeChanged(w, h, oldw, oldh); 105 | mTriangleWidth = w / mVisibleTabNum / 6; 106 | if (mTriangleWidth > DEFAULT_TRIANGLE_WIDTH) { 107 | mTriangleWidth = DEFAULT_TRIANGLE_WIDTH; 108 | } 109 | mTriangleHeigh = mTriangleWidth / 2 - 8; 110 | mTriangleInitPos = w / mVisibleTabNum / 2 - mTriangleWidth / 2; 111 | initTriangle(); 112 | } 113 | 114 | /** 115 | * 在XML布局加载完毕后回调 116 | */ 117 | @Override 118 | protected void onFinishInflate() { 119 | super.onFinishInflate(); 120 | //根据可显示的Tab数量动态去改变Tab的宽度 121 | int totalTabNum = getChildCount(); 122 | if (mVisibleTabNum != 0 && totalTabNum != 0) { 123 | for (int i = 0; i < totalTabNum; i++) { 124 | View view = getChildAt(i); 125 | LinearLayout.LayoutParams layoutParams = (LinearLayout.LayoutParams) view.getLayoutParams(); 126 | layoutParams.weight = 0; 127 | layoutParams.width = getScreenWidth() / mVisibleTabNum; 128 | view.setLayoutParams(layoutParams); 129 | } 130 | 131 | } 132 | } 133 | 134 | /** 135 | * 绘制子View 136 | * 137 | * @param canvas 138 | */ 139 | @Override 140 | protected void dispatchDraw(Canvas canvas) { 141 | super.dispatchDraw(canvas); 142 | canvas.translate(mTriangleInitPos + mTriangleMoveWidth, getHeight()); 143 | canvas.drawPath(mPath, mPaint); 144 | } 145 | 146 | /** 147 | * 监听ViewPager滑动,联动Indicator 148 | * 149 | * @param position 150 | * @param positionOffset 151 | */ 152 | protected void scroll(int position, float positionOffset) { 153 | int tabWidth = getScreenWidth() / mVisibleTabNum; 154 | mTriangleMoveWidth = (int) (tabWidth * position + tabWidth * positionOffset); 155 | 156 | if ((mVisibleTabNum - 2) <= position && positionOffset > 0 && getChildCount() > mVisibleTabNum) { 157 | this.scrollTo((int) ((position - (mVisibleTabNum - 2)) * tabWidth + tabWidth * positionOffset), 0); 158 | } 159 | 160 | invalidate(); 161 | } 162 | 163 | /** 164 | * 获取屏幕宽度 165 | * 166 | * @return 167 | */ 168 | private int getScreenWidth() { 169 | WindowManager windowManager = (WindowManager) getContext().getSystemService(Context.WINDOW_SERVICE); 170 | DisplayMetrics displayMetrics = new DisplayMetrics(); 171 | windowManager.getDefaultDisplay().getMetrics(displayMetrics); 172 | return displayMetrics.widthPixels; 173 | } 174 | 175 | /** 176 | * 设置指示器标题并给标题添加监听事件 177 | * 178 | * @param titles 179 | */ 180 | public void setPageTitle(List titles) { 181 | this.mTitles = titles; 182 | if (mTitles != null && mTitles.size() > 0) { 183 | removeAllViews(); 184 | for (int i = 0; i < mTitles.size(); i++) { 185 | final int pageIndex = i; 186 | TextView textView = new TextView(getContext()); 187 | LinearLayout.LayoutParams layoutParams = new LayoutParams(getScreenWidth() / mVisibleTabNum, LayoutParams.MATCH_PARENT); 188 | layoutParams.width = getScreenWidth() / mVisibleTabNum; 189 | textView.setText(mTitles.get(i)); 190 | textView.setGravity(Gravity.CENTER); 191 | textView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 16); 192 | textView.setTextColor(Color.parseColor("#FFFFFF")); 193 | textView.setLayoutParams(layoutParams); 194 | textView.setOnClickListener(new OnClickListener() { 195 | @Override 196 | public void onClick(View v) { 197 | //点击高亮文本 198 | setInitPageTitlesColor(); 199 | ((TextView) v).setTextColor(Color.parseColor("#FFFFFF")); 200 | mViewPager.setCurrentItem(pageIndex); 201 | } 202 | }); 203 | addView(textView); 204 | } 205 | } 206 | setInitPageTitlesColor(); 207 | setPageTitleHighColor(0); 208 | } 209 | 210 | /** 211 | * 把所有标题颜色置为不高亮 212 | */ 213 | private void setInitPageTitlesColor() { 214 | int totalView = getChildCount(); 215 | for (int i = 0; i < totalView; i++) { 216 | View view = getChildAt(i); 217 | if (view instanceof TextView) { 218 | ((TextView) view).setTextColor(Color.parseColor("#70FFFFFF")); 219 | } 220 | } 221 | } 222 | 223 | /** 224 | * 设置标题高亮 225 | * 226 | * @param pos 227 | */ 228 | private void setPageTitleHighColor(int pos) { 229 | View view = getChildAt(pos); 230 | if (view instanceof TextView) { 231 | ((TextView) view).setTextColor(Color.parseColor("#FFFFFF")); 232 | } 233 | 234 | } 235 | 236 | 237 | /** 238 | * 绑定ViewPager 239 | * 240 | * @param viewPager 241 | */ 242 | public void setViewPagerWithIndicator(ViewPager viewPager) { 243 | this.mViewPager = viewPager; 244 | mViewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() { 245 | @Override 246 | public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { 247 | if (mAddPageChangeListener != null) { 248 | mAddPageChangeListener.onPageScrolled(position, positionOffset, positionOffsetPixels); 249 | } 250 | scroll(position, positionOffset); 251 | } 252 | 253 | @Override 254 | public void onPageSelected(int position) { 255 | setInitPageTitlesColor(); 256 | setPageTitleHighColor(position); 257 | mViewPager.setCurrentItem(position); 258 | if (mAddPageChangeListener != null) { 259 | mAddPageChangeListener.onPageSelected(position); 260 | } 261 | } 262 | 263 | @Override 264 | public void onPageScrollStateChanged(int state) { 265 | if (mAddPageChangeListener != null) { 266 | mAddPageChangeListener.onPageScrollStateChanged(state); 267 | } 268 | } 269 | }); 270 | 271 | } 272 | 273 | /** 274 | * 避免用户监听ViewPager复写了addOnPageChangeListener使得三角形滑动效果失效 275 | * 276 | * @param addPageChangeListener 277 | */ 278 | public void addPageChangeListener(AddPageChangeListener addPageChangeListener) { 279 | this.mAddPageChangeListener = addPageChangeListener; 280 | } 281 | 282 | /** 283 | * 复制官方addOnPageChangeListener对应的接口方法 284 | * Callback interface for responding to changing state of the selected page. 285 | */ 286 | public interface AddPageChangeListener { 287 | 288 | /** 289 | * This method will be invoked when the current page is scrolled, either as part 290 | * of a programmatically initiated smooth scroll or a user initiated touch scroll. 291 | * 292 | * @param position Position index of the first page currently being displayed. 293 | * Page position+1 will be visible if positionOffset is nonzero. 294 | * @param positionOffset Value from [0, 1) indicating the offset from the page at position. 295 | * @param positionOffsetPixels Value in pixels indicating the offset from position. 296 | */ 297 | void onPageScrolled(int position, float positionOffset, int positionOffsetPixels); 298 | 299 | /** 300 | * This method will be invoked when a new page becomes selected. Animation is not 301 | * necessarily complete. 302 | * 303 | * @param position Position index of the new selected page. 304 | */ 305 | void onPageSelected(int position); 306 | 307 | /** 308 | * Called when the scroll state changes. Useful for discovering when the user 309 | * begins dragging, when the pager is automatically settling to the current page, 310 | * or when it is fully stopped/idle. 311 | * 312 | * @param state The new scroll state. 313 | * @see ViewPager#SCROLL_STATE_IDLE 314 | * @see ViewPager#SCROLL_STATE_DRAGGING 315 | * @see ViewPager#SCROLL_STATE_SETTLING 316 | */ 317 | void onPageScrollStateChanged(int state); 318 | } 319 | } 320 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 9 | 10 | 17 | 18 | 22 | 23 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Lichenwei-Dev/ViewPagerTriangleIndicator/HEAD/app/src/main/res/mipmap-hdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-mdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Lichenwei-Dev/ViewPagerTriangleIndicator/HEAD/app/src/main/res/mipmap-mdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Lichenwei-Dev/ViewPagerTriangleIndicator/HEAD/app/src/main/res/mipmap-xhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Lichenwei-Dev/ViewPagerTriangleIndicator/HEAD/app/src/main/res/mipmap-xxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Lichenwei-Dev/ViewPagerTriangleIndicator/HEAD/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/values-w820dp/dimens.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 64dp 6 | 7 | -------------------------------------------------------------------------------- /app/src/main/res/values/attr.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | -------------------------------------------------------------------------------- /app/src/main/res/values/colors.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | #4e342e 4 | #4e342e 5 | #4e342e 6 | 7 | -------------------------------------------------------------------------------- /app/src/main/res/values/dimens.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 16dp 4 | 16dp 5 | 6 | -------------------------------------------------------------------------------- /app/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | ViewPagerTriangleIndicator 3 | 4 | -------------------------------------------------------------------------------- /app/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 10 | 11 | 12 | -------------------------------------------------------------------------------- /app/src/test/java/com/lcw/viewpagertriangleindicator/ExampleUnitTest.java: -------------------------------------------------------------------------------- 1 | package com.lcw.viewpagertriangleindicator; 2 | 3 | import org.junit.Test; 4 | 5 | import static org.junit.Assert.*; 6 | 7 | /** 8 | * Example local unit test, which will execute on the development machine (host). 9 | * 10 | * @see Testing documentation 11 | */ 12 | public class ExampleUnitTest { 13 | @Test 14 | public void addition_isCorrect() throws Exception { 15 | assertEquals(4, 2 + 2); 16 | } 17 | } -------------------------------------------------------------------------------- /gradle.properties: -------------------------------------------------------------------------------- 1 | # Project-wide Gradle settings. 2 | 3 | # IDE (e.g. Android Studio) users: 4 | # Gradle settings configured through the IDE *will override* 5 | # any settings specified in this file. 6 | 7 | # For more details on how to configure your build environment visit 8 | # http://www.gradle.org/docs/current/userguide/build_environment.html 9 | 10 | # Specifies the JVM arguments used for the daemon process. 11 | # The setting is particularly useful for tweaking memory settings. 12 | org.gradle.jvmargs=-Xmx1536m 13 | 14 | # When configured, Gradle will run in incubating parallel mode. 15 | # This option should only be used with decoupled projects. More details, visit 16 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects 17 | # org.gradle.parallel=true 18 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Lichenwei-Dev/ViewPagerTriangleIndicator/HEAD/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Mon Dec 28 10:00:20 PST 2015 2 | distributionBase=GRADLE_USER_HOME 3 | distributionPath=wrapper/dists 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip 7 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env bash 2 | 3 | ############################################################################## 4 | ## 5 | ## Gradle start up script for UN*X 6 | ## 7 | ############################################################################## 8 | 9 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 10 | DEFAULT_JVM_OPTS="" 11 | 12 | APP_NAME="Gradle" 13 | APP_BASE_NAME=`basename "$0"` 14 | 15 | # Use the maximum available, or set MAX_FD != -1 to use that value. 16 | MAX_FD="maximum" 17 | 18 | warn ( ) { 19 | echo "$*" 20 | } 21 | 22 | die ( ) { 23 | echo 24 | echo "$*" 25 | echo 26 | exit 1 27 | } 28 | 29 | # OS specific support (must be 'true' or 'false'). 30 | cygwin=false 31 | msys=false 32 | darwin=false 33 | case "`uname`" in 34 | CYGWIN* ) 35 | cygwin=true 36 | ;; 37 | Darwin* ) 38 | darwin=true 39 | ;; 40 | MINGW* ) 41 | msys=true 42 | ;; 43 | esac 44 | 45 | # Attempt to set APP_HOME 46 | # Resolve links: $0 may be a link 47 | PRG="$0" 48 | # Need this for relative symlinks. 49 | while [ -h "$PRG" ] ; do 50 | ls=`ls -ld "$PRG"` 51 | link=`expr "$ls" : '.*-> \(.*\)$'` 52 | if expr "$link" : '/.*' > /dev/null; then 53 | PRG="$link" 54 | else 55 | PRG=`dirname "$PRG"`"/$link" 56 | fi 57 | done 58 | SAVED="`pwd`" 59 | cd "`dirname \"$PRG\"`/" >/dev/null 60 | APP_HOME="`pwd -P`" 61 | cd "$SAVED" >/dev/null 62 | 63 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 64 | 65 | # Determine the Java command to use to start the JVM. 66 | if [ -n "$JAVA_HOME" ] ; then 67 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 68 | # IBM's JDK on AIX uses strange locations for the executables 69 | JAVACMD="$JAVA_HOME/jre/sh/java" 70 | else 71 | JAVACMD="$JAVA_HOME/bin/java" 72 | fi 73 | if [ ! -x "$JAVACMD" ] ; then 74 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 75 | 76 | Please set the JAVA_HOME variable in your environment to match the 77 | location of your Java installation." 78 | fi 79 | else 80 | JAVACMD="java" 81 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 82 | 83 | Please set the JAVA_HOME variable in your environment to match the 84 | location of your Java installation." 85 | fi 86 | 87 | # Increase the maximum file descriptors if we can. 88 | if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then 89 | MAX_FD_LIMIT=`ulimit -H -n` 90 | if [ $? -eq 0 ] ; then 91 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 92 | MAX_FD="$MAX_FD_LIMIT" 93 | fi 94 | ulimit -n $MAX_FD 95 | if [ $? -ne 0 ] ; then 96 | warn "Could not set maximum file descriptor limit: $MAX_FD" 97 | fi 98 | else 99 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 100 | fi 101 | fi 102 | 103 | # For Darwin, add options to specify how the application appears in the dock 104 | if $darwin; then 105 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 106 | fi 107 | 108 | # For Cygwin, switch paths to Windows format before running java 109 | if $cygwin ; then 110 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 111 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 112 | JAVACMD=`cygpath --unix "$JAVACMD"` 113 | 114 | # We build the pattern for arguments to be converted via cygpath 115 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` 116 | SEP="" 117 | for dir in $ROOTDIRSRAW ; do 118 | ROOTDIRS="$ROOTDIRS$SEP$dir" 119 | SEP="|" 120 | done 121 | OURCYGPATTERN="(^($ROOTDIRS))" 122 | # Add a user-defined pattern to the cygpath arguments 123 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then 124 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 125 | fi 126 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 127 | i=0 128 | for arg in "$@" ; do 129 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` 130 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option 131 | 132 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition 133 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` 134 | else 135 | eval `echo args$i`="\"$arg\"" 136 | fi 137 | i=$((i+1)) 138 | done 139 | case $i in 140 | (0) set -- ;; 141 | (1) set -- "$args0" ;; 142 | (2) set -- "$args0" "$args1" ;; 143 | (3) set -- "$args0" "$args1" "$args2" ;; 144 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;; 145 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 146 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 147 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 148 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 149 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 150 | esac 151 | fi 152 | 153 | # Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules 154 | function splitJvmOpts() { 155 | JVM_OPTS=("$@") 156 | } 157 | eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS 158 | JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME" 159 | 160 | exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@" 161 | -------------------------------------------------------------------------------- /gradlew.bat: -------------------------------------------------------------------------------- 1 | @if "%DEBUG%" == "" @echo off 2 | @rem ########################################################################## 3 | @rem 4 | @rem Gradle startup script for Windows 5 | @rem 6 | @rem ########################################################################## 7 | 8 | @rem Set local scope for the variables with windows NT shell 9 | if "%OS%"=="Windows_NT" setlocal 10 | 11 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 12 | set DEFAULT_JVM_OPTS= 13 | 14 | set DIRNAME=%~dp0 15 | if "%DIRNAME%" == "" set DIRNAME=. 16 | set APP_BASE_NAME=%~n0 17 | set APP_HOME=%DIRNAME% 18 | 19 | @rem Find java.exe 20 | if defined JAVA_HOME goto findJavaFromJavaHome 21 | 22 | set JAVA_EXE=java.exe 23 | %JAVA_EXE% -version >NUL 2>&1 24 | if "%ERRORLEVEL%" == "0" goto init 25 | 26 | echo. 27 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 28 | echo. 29 | echo Please set the JAVA_HOME variable in your environment to match the 30 | echo location of your Java installation. 31 | 32 | goto fail 33 | 34 | :findJavaFromJavaHome 35 | set JAVA_HOME=%JAVA_HOME:"=% 36 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe 37 | 38 | if exist "%JAVA_EXE%" goto init 39 | 40 | echo. 41 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 42 | echo. 43 | echo Please set the JAVA_HOME variable in your environment to match the 44 | echo location of your Java installation. 45 | 46 | goto fail 47 | 48 | :init 49 | @rem Get command-line arguments, handling Windowz variants 50 | 51 | if not "%OS%" == "Windows_NT" goto win9xME_args 52 | if "%@eval[2+2]" == "4" goto 4NT_args 53 | 54 | :win9xME_args 55 | @rem Slurp the command line arguments. 56 | set CMD_LINE_ARGS= 57 | set _SKIP=2 58 | 59 | :win9xME_args_slurp 60 | if "x%~1" == "x" goto execute 61 | 62 | set CMD_LINE_ARGS=%* 63 | goto execute 64 | 65 | :4NT_args 66 | @rem Get arguments from the 4NT Shell from JP Software 67 | set CMD_LINE_ARGS=%$ 68 | 69 | :execute 70 | @rem Setup the command line 71 | 72 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 73 | 74 | @rem Execute Gradle 75 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS% 76 | 77 | :end 78 | @rem End local scope for the variables with windows NT shell 79 | if "%ERRORLEVEL%"=="0" goto mainEnd 80 | 81 | :fail 82 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 83 | rem the _cmd.exe /c_ return code! 84 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 85 | exit /b 1 86 | 87 | :mainEnd 88 | if "%OS%"=="Windows_NT" endlocal 89 | 90 | :omega 91 | -------------------------------------------------------------------------------- /screenshot/ViewPagerTriangleIndicator.gif: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Lichenwei-Dev/ViewPagerTriangleIndicator/HEAD/screenshot/ViewPagerTriangleIndicator.gif -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | include ':app' 2 | --------------------------------------------------------------------------------