public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(R.layout.activity_main);//  setContentView(R.layout.activity_main2);//  setContentView(R.layout.activity_main3); }} 

public class CustomViewGroup extends ViewGroup { private final String TAG = getClass().getSimpleName(); public CustomViewGroup(Context context) {  super(context); } public CustomViewGroup(Context context, AttributeSet attrs) {  super(context, attrs); } public CustomViewGroup(Context context, AttributeSet attrs, int defStyleAttr) {  super(context, attrs, defStyleAttr); } /**  * 一、重寫generateLayoutParams，確定該ViewGroup的LayoutParams  * 返回MarginLayoutParams的實例，這樣就為我們的ViewGroup指定了其LayoutParams為MarginLayoutParams  */ @Override public LayoutParams generateLayoutParams(AttributeSet attrs) {  return new MarginLayoutParams(getContext(), attrs); } /**  * 二、計算所有ChildView的寬度和高度 然后根據(jù)ChildView的計算結果，設置自己的寬和高  */ @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {  super.onMeasure(widthMeasureSpec, heightMeasureSpec);  //1、獲得此ViewGroup上級容器為其推薦的寬和高，以及計算模式  int widthMode = MeasureSpec.getMode(widthMeasureSpec);  int heightMode = MeasureSpec.getMode(heightMeasureSpec);  int sizeWidth = MeasureSpec.getSize(widthMeasureSpec);  int sizeHeight = MeasureSpec.getSize(heightMeasureSpec);  // 2、如果ViewGroup布局是wrap_content時，根據(jù)childView的尺寸，計算容器的寬和高  int width = 0;//ViewGroup的寬度  int height = 0;//ViewGroup的高度  int lineWidth = 0;//childView所占據(jù)的當前行總寬度  int lineHeight = 0;//childView所占據(jù)的各行總高度  int cCount = getChildCount();////childView的數(shù)量  for(int i=0; i<cCount; i++){//遍歷每個childView   View childView = getChildAt(i);   measureChild(childView, widthMeasureSpec, heightMeasureSpec);// 測量當前child的寬和高   MarginLayoutParams mlp = (MarginLayoutParams) childView.getLayoutParams();   int cWidth = childView.getMeasuredWidth() + mlp.leftMargin + mlp.rightMargin;   int cHeight = childView.getMeasuredHeight() + mlp.topMargin + mlp.bottomMargin;   if(lineWidth + cWidth > sizeWidth){//如果加入當前childView后超出最大寬度，width取最大高度，累加lineHeight，然后開啟新行    width = Math.max(lineWidth, cWidth);    height += lineHeight;    lineWidth = cWidth;   }else{//如果加入當前childView后小于最大寬度，則累加lineWidthheight lineHeight取最大高度    lineWidth += cWidth;    height = Math.max(lineHeight, cHeight);   }   if(i == cCount-1){// 如果是最后一個childView，則將當前記錄的最大寬度和當前l(fā)ineWidth做比較    width = Math.max(lineWidth, cWidth);    height += lineHeight;   }  }  //3、如果是wrap_content設置為我們計算的值;否則直接設置為父容器計算的值  setMeasuredDimension(    (widthMode == MeasureSpec.EXACTLY) ? sizeWidth : width,    (heightMode == MeasureSpec.EXACTLY) ? sizeHeight : height  ); } /**  * 三、重寫onLayout，對其所有childView進行定位（設置childView的繪制區(qū)域）  */ private List<List<View>> allChildViews = new ArrayList<List<View>>();//存儲所有的childView，按行記錄 private List<Integer> maxLineHeight = new ArrayList<Integer>();//存儲每行的最大高度值 @Override protected void onLayout(boolean changed, int l, int t, int r, int b) {  allChildViews.clear();  maxLineHeight.clear();  int width = getWidth();//每行的最大寬度  int lineWidth = 0;//每行的即時寬度  int lineHeight = 0;//每行的即時高度  List<View> lineChildViews = new ArrayList<View>();//存儲每行所有的childView  int cCount = getChildCount();  for(int i=0; i<cCount; i++){//遍歷所有childView   View childView = getChildAt(i);   MarginLayoutParams mlp = (MarginLayoutParams) childView.getLayoutParams();   int cWidth = childView.getMeasuredWidth();   int cHeight = childView.getMeasuredHeight();   if(lineWidth + cWidth + mlp.leftMargin + mlp.rightMargin > width){//如果需要換行    maxLineHeight.add(lineHeight);// 存儲這一行最大高度    allChildViews.add(lineChildViews);// 將當前行的childView保存，然后開啟新的ArrayList保存下一行的childView    lineChildViews = new ArrayList<View>();    lineWidth = 0;// 重置行寬   }else{//如果不需要換行    lineWidth += cWidth + mlp.leftMargin + mlp.rightMargin;//即時寬度累加    lineHeight = Math.max(lineHeight,cHeight + mlp.topMargin + mlp.bottomMargin );//即時高度取最大值    lineChildViews.add(childView);//把當前childView存入這一行的集合   }  }  // 記錄最后一行  maxLineHeight.add(lineHeight);  allChildViews.add(lineChildViews);  int left = 0;//左坐標  int top = 0;//上坐標  int lineNums = allChildViews.size();// 得到總行數(shù)  for (int i = 0; i < lineNums; i++) {   lineChildViews = allChildViews.get(i);// 取得每一行的所有的views   lineHeight = maxLineHeight.get(i);// 取得當前行的最大高度   Log.e(TAG, "第" + i + "行 ：" + lineChildViews.size() + " , " + lineChildViews);   Log.e(TAG, "第" + i + "行， ：" + lineHeight);   // 遍歷當前行所有的View    for (int j = 0; j < lineChildViews.size(); j++) {    View childView = lineChildViews.get(j);//取得childView    if (childView.getVisibility() == View.GONE) {     continue;    }    MarginLayoutParams mlp = (MarginLayoutParams) childView.getLayoutParams();    //計算childView的left,top,right,bottom    int lc = left + mlp.leftMargin;    int tc = top + mlp.topMargin;    int rc = lc + childView.getMeasuredWidth();    int bc = tc + childView.getMeasuredHeight();    Log.e(TAG, childView + " , l = " + lc + " , t = " + t + " , r =" + rc + " , b = " + bc);    childView.layout(lc, tc, rc, bc);//設置這個childView的位置    left += childView.getMeasuredWidth() + mlp.rightMargin + mlp.leftMargin;//左坐標累加   }   left = 0;//開始新的一行，左坐標重置   top += lineHeight;//開始新的一行，上坐標累加  } }}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#E1E6F6" android:orientation="vertical"> <com.cctvjiatao.customviewgroupflowlayout.view.CustomViewGroup  android:layout_width="fill_parent"  android:layout_height="wrap_content">  <TextView   style="@style/text_flag_01"   android:text="Welcome" />  <TextView   style="@style/text_flag_01"   android:text="IT工程師" />  <TextView   style="@style/text_flag_01"   android:text="學習ing" />  <TextView   style="@style/text_flag_01"   android:text="戀愛ing" />  <TextView   style="@style/text_flag_01"   android:text="掙錢ing" />  <TextView   style="@style/text_flag_01"   android:text="努力ing" />  <TextView   style="@style/text_flag_01"   android:text="I thick i can" /> </com.cctvjiatao.customviewgroupflowlayout.view.CustomViewGroup></LinearLayout>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#E1E6F6" android:orientation="vertical"> <com.cctvjiatao.customviewgroupflowlayout.view.CustomViewGroup  android:layout_width="fill_parent"  android:layout_height="wrap_content">  <TextView   style="@style/text_flag_01"   android:text="Welcome" />  <TextView   style="@style/text_flag_01"   android:text="IT工程師" />  <TextView   style="@style/text_flag_01"   android:text="學習ing" />  <TextView   style="@style/text_flag_01"   android:text="戀愛ing" />  <TextView   style="@style/text_flag_01"   android:text="掙錢ing" />  <TextView   style="@style/text_flag_01"   android:text="努力ing" />  <TextView   style="@style/text_flag_01"   android:text="I thick i can" /> </com.cctvjiatao.customviewgroupflowlayout.view.CustomViewGroup> <com.cctvjiatao.customviewgroupflowlayout.view.CustomViewGroup  android:layout_width="fill_parent"  android:layout_height="wrap_content"  android:layout_marginTop="20dp">  <TextView   style="@style/text_flag_01"   android:background="@drawable/flag_02"   android:text="Welcome"   android:textColor="#888888" />  <TextView   style="@style/text_flag_01"   android:background="@drawable/flag_02"   android:text="IT工程師"   android:textColor="#888888" />  <TextView   style="@style/text_flag_01"   android:background="@drawable/flag_02"   android:text="學習ing"   android:textColor="#888888" />  <TextView   style="@style/text_flag_01"   android:background="@drawable/flag_02"   android:text="戀愛ing"   android:textColor="#888888" />  <TextView   style="@style/text_flag_01"   android:background="@drawable/flag_02"   android:text="掙錢ing"   android:textColor="#888888" />  <TextView   style="@style/text_flag_01"   android:background="@drawable/flag_02"   android:text="努力ing"   android:textColor="#888888" />  <TextView   style="@style/text_flag_01"   android:background="@drawable/flag_02"   android:text="I thick i can"   android:textColor="#888888" /> </com.cctvjiatao.customviewgroupflowlayout.view.CustomViewGroup> <com.cctvjiatao.customviewgroupflowlayout.view.CustomViewGroup  android:layout_width="fill_parent"  android:layout_height="wrap_content"  android:layout_marginTop="20dp">  <TextView   style="@style/text_flag_01"   android:background="@drawable/flag_03"   android:text="Welcome"   android:textColor="#43BBE7" />  <TextView   style="@style/text_flag_01"   android:background="@drawable/flag_03"   android:text="IT工程師"   android:textColor="#43BBE7" />  <TextView   style="@style/text_flag_01"   android:background="@drawable/flag_03"   android:text="學習ing"   android:textColor="#43BBE7" />  <TextView   style="@style/text_flag_01"   android:background="@drawable/flag_03"   android:text="戀愛ing"   android:textColor="#43BBE7" />  <TextView   style="@style/text_flag_01"   android:background="@drawable/flag_03"   android:text="掙錢ing"   android:textColor="#43BBE7" />  <TextView   style="@style/text_flag_01"   android:background="@drawable/flag_03"   android:text="努力ing"   android:textColor="#43BBE7" />  <TextView   style="@style/text_flag_01"   android:background="@drawable/flag_03"   android:text="I thick i can"   android:textColor="#43BBE7" /> </com.cctvjiatao.customviewgroupflowlayout.view.CustomViewGroup></LinearLayout> 

<com.cctvjiatao.customviewgroupflowlayout.view.CustomViewGroup xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="200dp" android:layout_height="wrap_content" android:background="#FFFFFF"> <TextView  style="@style/text_flag_01"  android:background="@drawable/flag_04"  android:text="Welcome"  android:textColor="#323232" /> <TextView  style="@style/text_flag_01"  android:background="@drawable/flag_04"  android:text="IT工程師"  android:textColor="#323232" /> <TextView  style="@style/text_flag_01"  android:background="@drawable/flag_04"  android:text="學習ing"  android:textColor="#323232" /> <TextView  style="@style/text_flag_01"  android:background="@drawable/flag_04"  android:text="戀愛ing"  android:textColor="#323232" /> <TextView  style="@style/text_flag_01"  android:background="@drawable/flag_04"  android:text="掙錢ing"  android:textColor="#323232" /> <TextView  style="@style/text_flag_01"  android:background="@drawable/flag_04"  android:text="努力ing"  android:textColor="#323232" /> <TextView  style="@style/text_flag_01"  android:background="@drawable/flag_04"  android:text="I thick i can"  android:textColor="#323232" /></com.cctvjiatao.customviewgroupflowlayout.view.CustomViewGroup>