>
20 |
21 | /**
22 | * 注册单个 AdapterDelegate
23 | */
24 | fun registerAdapterDelegate(adapterDelegate: AdapterDelegate<*, *>) {
25 | this.adapterDelegates.add(adapterDelegate)
26 | }
27 |
28 | /**
29 | * 注册单个 AdapterDelegate，并指定 index
30 | */
31 | fun registerAdapterDelegate(index: Int, adapterDelegate: AdapterDelegate<*, *>) {
32 | this.adapterDelegates.add(index, adapterDelegate)
33 | }
34 |
35 | /**
36 | * 注册多个 AdapterDelegate
37 | */
38 | fun registerAdapterDelegates(vararg adapterDelegates: AdapterDelegate<*, *>) {
39 | this.adapterDelegates.addAll(adapterDelegates)
40 | }
41 |
42 | /**
43 | * 注册多个 AdapterDelegate
44 | */
45 | fun registerAdapterDelegates(index: Int,vararg adapterDelegates: AdapterDelegate<*, *>) {
46 | this.adapterDelegates.addAll(index, adapterDelegates.toList())
47 | }
48 |
49 | /**
50 | * 注销单个 AdapterDelegate
51 | */
52 | fun unregisterAdapterDelegate(adapterDelegate: AdapterDelegate<*, *>) {
53 | this.adapterDelegates.remove(adapterDelegate)
54 | }
55 |
56 | /**
57 | * 注销所有 AdapterDelegate
58 | */
59 | fun clearAdapterDelegates() {
60 | adapterDelegates.clear()
61 | }
62 | }
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/flap-annotations/src/main/java/me/yifeiyuan/flap/annotations/Delegate.java:
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1 | package me.yifeiyuan.flap.annotations;
2 |
3 | import java.lang.annotation.ElementType;
4 | import java.lang.annotation.Retention;
5 | import java.lang.annotation.RetentionPolicy;
6 | import java.lang.annotation.Target;
7 |
8 | /**
9 | *
10 | * 被 @Delegate 注解的组件，会生成一个 AdapterDelegate 类，生成的类的命名规则：组件类名+AdapterDelegate。
11 | *
12 | *
13 | * Created by 程序亦非猿 on 2021/9/22.
14 | *
15 | * Flap Github: https://github.com/AlanCheen/Flap
16 | *
17 | * @author 程序亦非猿 [Follow me]( https://github.com/AlanCheen)
18 | * @since 2020/9/22
19 | * @since 3.0.0
20 | */
21 | @Retention(RetentionPolicy.SOURCE)
22 | @Target(ElementType.TYPE)
23 | public @interface Delegate {
24 |
25 | /**
26 | * 返回组件的布局 ID，也会被当做组件的 itemViewType
27 | *
28 | * 注意：layoutId 只支持在 App 模块中使用，如果要在子模块中使用，请用 layoutName
29 | *
30 | * @see #layoutName()
31 | *
32 | * @return the layout res id
33 | * @since 1.1.0
34 | */
35 | int layoutId() default -1;
36 |
37 | /**
38 | * 该组件的布局文件的名字，例如一个布局文件叫 a_b_c.xml ，那么该值为 a_b_c，不需要后缀 .xml
39 | *
40 | * @return 组件布局的名字
41 | * @since 2.1.0
42 | */
43 | String layoutName() default "";
44 |
45 | /**
46 | * 是否使用 DataBinding，假如使用 DataBinding,那么组件的构造方法需要做一定的修改;
47 | * DataBinding 的优先级大于 ViewBinding
48 | *
49 | * @see #useViewBinding()
50 | *
51 | * @return 如果要使用 DataBinding 则设置 true
52 | * @since 1.5.1
53 | */
54 | boolean useDataBinding() default false;
55 |
56 | /**
57 | * 是否使用 ViewBinding，假如使用 ViewBinding,那么组件的构造方法需要做一定的修改
58 | * DataBinding 的优先级大于 ViewBinding
59 | *
60 | * @see #useDataBinding()
61 | *
62 | * @return 如果要使用 ViewBinding 则设置 true
63 | * @since 2.2.0
64 | */
65 | boolean useViewBinding() default false;
66 |
67 | }
68 |
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/flap/src/main/java/me/yifeiyuan/flap/skeleton/SkeletonAdapter.kt:
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1 | package me.yifeiyuan.flap.skeleton
2 |
3 | import android.view.LayoutInflater
4 | import android.view.View
5 | import android.view.ViewGroup
6 | import androidx.annotation.LayoutRes
7 | import androidx.recyclerview.widget.RecyclerView
8 |
9 | /**
10 | * Created by 程序亦非猿 on 2022/8/11.
11 | *
12 | * @since 3.0.1
13 | */
14 | class SkeletonAdapter : RecyclerView.Adapter() {
15 |
16 | var shimmer: Boolean = false
17 | var skeletonItemCount: Int = 0
18 |
19 | @LayoutRes
20 | var skeletonLayoutRes: Int = -1
21 |
22 | var multiSkeletonLayoutRes: ((position: Int) -> Int)? = null
23 |
24 | override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): SkeletonViewHolder {
25 | val inflater = LayoutInflater.from(parent.context)
26 | val view: View
27 | if (shimmer) {
28 | val shimmerView = ShimmerFrameLayout(parent.context)
29 | shimmerView.layoutParams = RecyclerView.LayoutParams(RecyclerView.LayoutParams.MATCH_PARENT, RecyclerView.LayoutParams.WRAP_CONTENT)
30 | shimmerView.shimmer?.autoStart = true
31 | inflater.inflate(viewType, shimmerView, true)
32 | view = shimmerView
33 | } else {
34 | view = inflater.inflate(viewType, parent, false)
35 | }
36 | return SkeletonViewHolder(view)
37 | }
38 |
39 | override fun onBindViewHolder(holder: SkeletonViewHolder, position: Int) {}
40 |
41 | override fun getItemCount(): Int {
42 | return skeletonItemCount
43 | }
44 |
45 | override fun getItemViewType(position: Int): Int {
46 | if (multiSkeletonLayoutRes != null) {
47 | return multiSkeletonLayoutRes!!.invoke(position)
48 | }
49 | return skeletonLayoutRes
50 | }
51 | }
52 |
53 | class SkeletonViewHolder(view: View) : RecyclerView.ViewHolder(view)
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/flap/src/main/java/me/yifeiyuan/flap/widget/FlapGridLayoutManager.kt:
--------------------------------------------------------------------------------
1 | package me.yifeiyuan.flap.widget
2 |
3 | import android.content.Context
4 | import android.util.AttributeSet
5 | import androidx.recyclerview.widget.GridLayoutManager
6 | import androidx.recyclerview.widget.RecyclerView
7 | import me.yifeiyuan.flap.FlapDebug
8 |
9 | /**
10 | * Created by 程序亦非猿 on 2021/9/30.
11 | * @since 3.0.0
12 | */
13 | open class FlapGridLayoutManager
14 | : GridLayoutManager {
15 |
16 | constructor(context: Context?, attrs: AttributeSet? = null, defStyleAttr: Int = 0, defStyleRes: Int = 0) : super(context, attrs, defStyleAttr, defStyleRes)
17 | constructor(context: Context?, spanCount: Int) : super(context, spanCount)
18 | constructor(context: Context?, spanCount: Int, orientation: Int = RecyclerView.VERTICAL, reverseLayout: Boolean = false) : super(context, spanCount, orientation, reverseLayout)
19 |
20 | companion object {
21 | private const val TAG = "FlapGridLayoutManager"
22 | }
23 |
24 | var supportsPredictiveItemAnimations = false
25 |
26 | init {
27 | isSmoothScrollbarEnabled = false
28 | }
29 |
30 | /**
31 | * Disable predictive animations. There is a bug in RecyclerView which causes views that
32 | * are being reloaded to pull invalid ViewHolders from the internal recycler stack if the
33 | * adapter size has decreased since the ViewHolder was recycled.
34 | *
35 | * https://stackoverflow.com/questions/30220771/recyclerview-inconsistency-detected-invalid-item-position
36 | */
37 | override fun supportsPredictiveItemAnimations(): Boolean {
38 | return supportsPredictiveItemAnimations
39 | }
40 |
41 | override fun onLayoutChildren(recycler: RecyclerView.Recycler?, state: RecyclerView.State?) {
42 | try {
43 | super.onLayoutChildren(recycler, state)
44 | } catch (e: Exception) {
45 | e.printStackTrace()
46 | FlapDebug.e(TAG, "onLayoutChildren: ", e)
47 | }
48 | }
49 | }
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/app/src/main/res/menu/activity_main_drawer.xml:
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1 |
2 |
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/app/src/main/java/me/yifeiyuan/flapdev/components/SimpleTextComponent.kt:
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1 | package me.yifeiyuan.flapdev.components
2 |
3 | import android.view.LayoutInflater
4 | import android.view.View
5 | import android.view.ViewGroup
6 | import android.widget.TextView
7 | import me.yifeiyuan.flap.Component
8 | import me.yifeiyuan.flap.ViewTypeGenerator
9 | import me.yifeiyuan.flap.delegate.AdapterDelegate
10 | import me.yifeiyuan.flap.dsl.adapterDelegate
11 | import me.yifeiyuan.flap.ext.bindTextView
12 | import me.yifeiyuan.flapdev.R
13 |
14 | /**
15 | * Created by 程序亦非猿 on 2018/12/4.
16 | *
17 | * 作为文档 Demo
18 | */
19 |
20 | data class SimpleTextModel(val content: String) {
21 | override fun toString(): String {
22 | return "content=$content,SimpleTextModel"
23 | }
24 | }
25 |
26 | fun createSimpleTextDelegate() = adapterDelegate(R.layout.flap_component_simple_text) {
27 | onBind { model ->
28 | bindTextView(R.id.tv_content) {
29 | text = model.content
30 | }
31 | }
32 | }
33 |
34 | class SimpleTextComponent(itemView: View) : Component(itemView) {
35 |
36 | private val tvContent: TextView = findViewById(R.id.tv_content)
37 |
38 | override fun onBind(model: SimpleTextModel, position: Int, payloads: List) {
39 | tvContent.text = model.content
40 | }
41 | }
42 |
43 | //自定义 AdapterDelegate 实现
44 | class SimpleTextComponentDelegate : AdapterDelegate {
45 |
46 | override fun isDelegateFor(model: Any): Boolean {
47 | return SimpleTextModel::class.java == model::class.java
48 | }
49 |
50 | override fun onCreateViewHolder(inflater: LayoutInflater, parent: ViewGroup, viewType: Int): SimpleTextComponent {
51 | return SimpleTextComponent(inflater.inflate(R.layout.flap_component_simple_text, parent, false))
52 | }
53 |
54 | override fun getItemViewType(model: Any): Int {
55 | return ViewTypeGenerator.generateViewType()
56 | // return R.layout.flap_item_simple_text
57 | }
58 | }
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/flap/src/main/java/me/yifeiyuan/flap/widget/FlapLinearLayoutManager.kt:
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1 | package me.yifeiyuan.flap.widget
2 |
3 | import android.content.Context
4 | import android.util.AttributeSet
5 | import androidx.recyclerview.widget.LinearLayoutManager
6 | import androidx.recyclerview.widget.RecyclerView
7 | import me.yifeiyuan.flap.FlapDebug
8 |
9 | /**
10 | * Created by 程序亦非猿 on 2021/9/30.
11 | * @since 3.0.0
12 | */
13 | open class FlapLinearLayoutManager
14 | : LinearLayoutManager {
15 |
16 | constructor(context: Context) : super(context)
17 |
18 | constructor(context: Context, orientation: Int = RecyclerView.VERTICAL, reverseLayout: Boolean = false) : super(context, orientation, reverseLayout)
19 |
20 | constructor(context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0, defStyleRes: Int = 0) : super(context, attrs, defStyleAttr, defStyleRes)
21 |
22 | companion object {
23 | private const val TAG = "FlapLinearLayoutManager"
24 | }
25 |
26 | var supportsPredictiveItemAnimations = false
27 |
28 | init {
29 | //当第一个 Item 高度为 0，会影响 RV 计算是否能滑动，所以设置为 false
30 | isSmoothScrollbarEnabled = false
31 | }
32 |
33 | /**
34 | * Disable predictive animations. There is a bug in RecyclerView which causes views that
35 | * are being reloaded to pull invalid ViewHolders from the internal recycler stack if the
36 | * adapter size has decreased since the ViewHolder was recycled.
37 | *
38 | * https://stackoverflow.com/questions/30220771/recyclerview-inconsistency-detected-invalid-item-position
39 | */
40 | override fun supportsPredictiveItemAnimations(): Boolean {
41 | return supportsPredictiveItemAnimations
42 | }
43 |
44 | override fun onLayoutChildren(recycler: RecyclerView.Recycler?, state: RecyclerView.State?) {
45 | try {
46 | super.onLayoutChildren(recycler, state)
47 | } catch (e: Exception) {
48 | e.printStackTrace()
49 | FlapDebug.e(TAG, "onLayoutChildren: ", e)
50 | }
51 | }
52 | }
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/app/src/main/res/drawable-v24/ic_launcher_foreground.xml:
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1 |
7 |
12 |
13 |
19 |
override `onBind` method：
42 |
43 | ```kotlin
44 | val simpleTextDelegate = adapterDelegate(R.layout.flap_item_simple_text) {
45 | onBind { model ->
46 | bindTextView(R.id.tv_content) {
47 | text = model.content
48 | }
49 | }
50 | }
51 | ```
52 |
53 | Use a `FlapAdapter` instead of `Adapter` and register AdapterDelegate to a FlapAdapter： :
54 |
55 | ```kotlin
56 | //create FlapAdapter
57 | var adapter: FlapAdapter = FlapAdapter()
58 |
59 | //register AdapterDelegate
60 | adapter.registerAdapterDelegate(simpleTextDelegate)
61 |
62 | val dataList = ArrayList()
63 | dataList.add(SimpleTextModel("Android"))
64 | dataList.add(SimpleTextModel("Java"))
65 | dataList.add(SimpleTextModel("Kotlin"))
66 |
67 | //setData
68 | adapter.setDataAndNotify(dataList);
69 |
70 | recyclerView.adapter = adapter
71 | ```
72 |
73 | Here we go!!
74 |
75 | 