设置数据适配器

Author: LRH1993

app/src/main/java/com/example/lvruheng/autoflowlayout/AutoFlowLayout.java

@@ -4,7 +4,6 @@
 import android.content.res.TypedArray;
 import android.graphics.drawable.Drawable;
 import android.util.AttributeSet;
-import android.util.Log;
 import android.view.View;
 import android.widget.LinearLayout;
 import java.util.ArrayList;
@@ -13,7 +12,7 @@
 /**
  *自定义LinearLayout，支持自动换行，指定行数,实现流式布局
  */
-public class AutoFlowLayout extends LinearLayout {
+public class AutoFlowLayout <T> extends LinearLayout {
  /**
  * 存储所有的View，按行记录
  */
@@ -67,6 +66,11 @@ public class AutoFlowLayout extends LinearLayout {
  * 记录展示的数量
  */
  private int mDisplayNumbers;
+ /**
+ * 数据适配器
+ */
+ private FlowAdapter<T> mAdapter;
+
  public AutoFlowLayout(Context context) {
  super(context);
  }
@@ -91,6 +95,16 @@ private void init(Context context, AttributeSet attrs) {
  @Override
  protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
  super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+ setFlowMesure(widthMeasureSpec,heightMeasureSpec);
+
+ }
+
+ /**
+ * 流式布局的测量模式
+ * @param widthMeasureSpec
+ * @param heightMeasureSpec
+ */
+ private void setFlowMesure(int widthMeasureSpec, int heightMeasureSpec) {
  // 获得它的父容器为它设置的测量模式和大小
  int sizeWidth = MeasureSpec.getSize(widthMeasureSpec);
  int sizeHeight = MeasureSpec.getSize(heightMeasureSpec);
@@ -164,6 +178,13 @@ protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
 
  @Override
  protected void onLayout(boolean changed, int l, int t, int r, int b) {
+ setFlowLayout();
+ }
+
+ /**
+ * 流式布局的布局模式
+ */
+ private void setFlowLayout() {
  mAllViews.clear();
  mLineHeight.clear();
 
@@ -437,6 +458,22 @@ public List<View> getCheckedViews() {
  public View getSelectedView() {
  return mSelectedView;
  }
+
+ /**
+ * 设置数据适配器
+ * @param adapter
+ */
+ public void setAdapter(FlowAdapter<T> adapter) {
+ mAdapter = adapter;
+ if (mAdapter.getCount() != 0) {
+ for (int i = 0; i < mAdapter.getCount(); i ++) {
+ View view = mAdapter.getView(i);
+ addView(view);
+ }
+ requestLayout();
+ }
+ }
+
  public interface OnItemClickListener{
  void onItemClick(int position,View view);
  }

app/src/main/java/com/example/lvruheng/autoflowlayout/FlowAdapter.java

@@ -0,0 +1,32 @@
+package com.example.lvruheng.autoflowlayout;
+
+import android.view.View;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * Created by lvruheng on 2017/8/1.
+ */
+
+public abstract class FlowAdapter<T> {
+ private List<T> mList;
+
+ public FlowAdapter(List<T> datas) {
+ mList = datas;
+ }
+ public FlowAdapter(T[] datas) {
+ mList = new ArrayList<T>(Arrays.asList(datas));
+ }
+
+ public T getItem(int position) {
+ return mList.get(position);
+ }
+
+ public int getCount() {
+ return mList == null ? 0 : mList.size();
+ }
+
+ public abstract View getView(int position);
+}

app/src/main/java/com/example/lvruheng/autoflowlayout/MainActivity.java

@@ -18,13 +18,15 @@ protected void onCreate(Bundle savedInstanceState) {
  setContentView(R.layout.activity_main);
  mFlowLayout = (AutoFlowLayout) findViewById(R.id.afl_cotent);
  mLayoutInflater = LayoutInflater.from(this);
- for(int i = 0; i<mData.length; i++){
- View item = mLayoutInflater.inflate(R.layout.sub_item, null);
- TextView tvAttrTag = (TextView) item.findViewById(R.id.tv_attr_tag);
- tvAttrTag.setText(mData[i]);
- final String content = mData[i];
- mFlowLayout.addView(item);
- }
+ mFlowLayout.setAdapter(new FlowAdapter(mData) {
+ @Override
+ public View getView(int position) {
+ View item = mLayoutInflater.inflate(R.layout.sub_item, null);
+ TextView tvAttrTag = (TextView) item.findViewById(R.id.tv_attr_tag);
+ tvAttrTag.setText(mData[position]);
+ return item;
+ }
+ });
  mFlowLayout.setOnItemClickListener(new AutoFlowLayout.OnItemClickListener() {
  @Override
  public void onItemClick(int position,View view) {