線上效果圖
[程式碼]xml程式碼：
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import java.util.ArrayList;import java.util.List; import android.content.Context;import android.util.AttributeSet;import android.view.View;import android.view.ViewGroup;public class XCFlowLayout extends ViewGroup{ //儲存所有子View private ListList> mAllChildViews = new ArrayList(); //每一行的高度 private ListInteger> mLineHeight = new ArrayList(); public XCFlowLayout(Context context) { this(context, null); // TODO Auto-generated constructor stub } public XCFlowLayout(Context context, AttributeSet attrs) { this(context, attrs, 0); // TODO Auto-generated constructor stub } public XCFlowLayout(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); // TODO Auto-generated constructor stub } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { // TODO Auto-generated method stub //父控制元件傳進來的寬度和高度以及對應的測量模式 int sizeWidth = MeasureSpec.getSize(widthMeasureSpec); int modeWidth = MeasureSpec.getMode(widthMeasureSpec); int sizeHeight = MeasureSpec.getSize(heightMeasureSpec); int modeHeight = MeasureSpec.getMode(heightMeasureSpec); //如果當前ViewGroup的寬高為wrap_content的情況 int width = 0;//自己測量的 寬度 int height = 0;//自己測量的高度 //記錄每一行的寬度和高度 int lineWidth = 0; int lineHeight = 0; //獲取子view的個數 int childCount = getChildCount(); for(int i = 0;i childCount; i ++){ View child = getChildAt(i); //測量子View的寬和高 measureChild(child, widthMeasureSpec, heightMeasureSpec); //得到LayoutParams// MarginLayoutParams lp = (MarginLayoutParams) getLayoutParams(); MarginLayoutParams lp =(MarginLayoutParams) child.getLayoutParams(); //子View佔據的寬度 int childWidth = child.getMeasuredWidth() + lp.leftMargin + lp.rightMargin; //子View佔據的高度 int childHeight = child.getMeasuredHeight() + lp.topMargin + lp.bottomMargin; //換行時候 if(lineWidth + childWidth > sizeWidth){ //對比得到最大的寬度 width = Math.max(width, lineWidth); //重置lineWidth lineWidth = childWidth; //記錄行高 height += lineHeight; lineHeight = childHeight; }else{//不換行情況 //疊加行寬 lineWidth += childWidth; //得到最大行高 lineHeight = Math.max(lineHeight, childHeight); } //處理最後一個子View的情況 if(i == childCount -1){ width = Math.max(width, lineWidth); height += lineHeight; } } //wrap_content setMeasuredDimension(modeWidth == MeasureSpec.EXACTLY ? sizeWidth : width, modeHeight == MeasureSpec.EXACTLY ? sizeHeight : height);// super.onMeasure(widthMeasureSpec, heightMeasureSpec); } @Override protected void onLayout(boolean changed, int l, int t, int r, int b) { // TODO Auto-generated method stub mAllChildViews.clear(); mLineHeight.clear(); //獲取當前ViewGroup的寬度 int width = getWidth(); int lineWidth = 0; int lineHeight = 0; //記錄當前行的view ListView> lineViews = new ArrayListView>(); int childCount = getChildCount(); for(int i = 0;i childCount; i ++){ View child = getChildAt(i); MarginLayoutParams lp = (MarginLayoutParams) child.getLayoutParams(); int childWidth = child.getMeasuredWidth(); int childHeight = child.getMeasuredHeight(); //如果需要換行 if(childWidth + lineWidth + lp.leftMargin + lp.rightMargin > width){ //記錄LineHeight mLineHeight.add(lineHeight); //記錄當前行的Views mAllChildViews.add(lineViews); //重置行的寬高 lineWidth = 0; lineHeight = childHeight + lp.topMargin + lp.bottomMargin; //重置view的集合 lineViews = new ArrayList(); } lineWidth += childWidth + lp.leftMargin + lp.rightMargin; lineHeight = Math.max(lineHeight, childHeight + lp.topMargin + lp.bottomMargin); lineViews.add(child); } //處理最後一行 mLineHeight.add(lineHeight); mAllChildViews.add(lineViews); //設定子View的位置 int left = 0; int top = 0; //獲取行數 int lineCount = mAllChildViews.size(); for(int i = 0; i //當前行的views和高度 lineViews = mAllChildViews.get(i); lineHeight = mLineHeight.get(i); for(int j = 0; j View child = lineViews.get(j); //判斷是否顯示 if(child.getVisibility() == View.GONE){ continue; } MarginLayoutParams lp = (MarginLayoutParams) child.getLayoutParams(); int cLeft = left + lp.leftMargin; int cTop = top + lp.topMargin; int cRight = cLeft + child.getMeasuredWidth(); int cBottom = cTop + child.getMeasuredHeight(); //進行子View進行佈局 child.layout(cLeft, cTop, cRight, cBottom); left += child.getMeasuredWidth() + lp.leftMargin + lp.rightMargin; } left = 0; top += lineHeight; } } @Override public LayoutParams generateLayoutParams(AttributeSet attrs) { // TODO Auto-generated method stub return new MarginLayoutParams(getContext(), attrs); }}
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然後在activity的xml中引用自定義控制元件
[程式碼]xml程式碼：
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com.segohotels.app.widget.XCFlowLayout android:id="@+id/flowlayout1" android:layout_width="match_parent" android:layout_marginTop="10dp" android:layout_marginLeft="10dp" android:layout_height="wrap_content"> com.segohotels.app.widget.XCFlowLayout> |
最後在activity中使用
[程式碼]xml程式碼：
申明自定義控制元件
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rivate String mNames[] = { "welcome", "androidwelcome", "TextView", "apple", "jamy", "kobe bryant", }; @InjectViews({R.id.flowlayout,R.id.flowlayout1}) ListXCFlowLayout> mFlowLayout;
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[程式碼]xml程式碼：
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private void initChildViews() { // TODO Auto-generated method stub MarginLayoutParams lp = new MarginLayoutParams( LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); lp.leftMargin = 5; lp.rightMargin = 5; lp.topMargin = 5; lp.bottomMargin = 5; for (int i = 0; i TextView view = new TextView(this); view.setText(mNames[i]); view.setTextColor(getResources().getColor(R.color.Login_btn)); view.setGravity(Gravity.CENTER); view.setBackgroundDrawable(getResources().getDrawable(R.drawable.em_main_bottom_item_bg2)); view.setSelected(true); TextView view1 = new TextView(this); view1.setText(mNames[i]); view1.setTextColor(getResources().getColor(R.color.Login_btn)); view1.setGravity(Gravity.CENTER); view1.setBackgroundDrawable(getResources().getDrawable(R.drawable.em_main_bottom_item_bg2)); view1.setSelected(false); mFlowLayout.get(0).addView(view, lp); mFlowLayout.get(1).addView(view1, lp); } }
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最後在呼叫這個方法
原文連結：http://www.apkbus.com/blog-508687-68496.html