1先看效果图
2项目目录
3在定义控件FlowTagGroup
package android.zhh.com.myviewgroup; /** * Created by sky on 2017/3/10. */ import android.content.Context; import android.util.AttributeSet; import android.util.Log; import android.view.View; import android.view.ViewGroup; import java.util.ArrayList; import java.util.List; /** * 流布局 */ public class FlowTagGroup extends ViewGroup { public FlowTagGroup(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); } public FlowTagGroup(Context context, AttributeSet attrs) { this(context, attrs, 0); } public FlowTagGroup(Context context) { this(context, null); } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { int sizeWidth = MeasureSpec.getSize(widthMeasureSpec); int modeWidth = MeasureSpec.getMode(widthMeasureSpec); int sizeHeight = MeasureSpec.getSize(heightMeasureSpec); int modeHeight = MeasureSpec.getMode(heightMeasureSpec); // wrap_content int width = 0; int height = 0; // 记录每一行的宽度与高度 int lineWidth = 0; int lineHeight = 0; // 得到内部元素的个数 int cCount = getChildCount(); for (int i = 0; i < cCount; i++) { View child = getChildAt(i); // 测量子View的宽和高 measureChild(child, widthMeasureSpec, heightMeasureSpec); // 得到LayoutParams MarginLayoutParams lp = (MarginLayoutParams) child .getLayoutParams(); // 子View占据的宽度 int childWidth = child.getMeasuredWidth() + lp.leftMargin + lp.rightMargin; // 子View占据的高度 int childHeight = child.getMeasuredHeight() + lp.topMargin + lp.bottomMargin; // 换行 if (lineWidth + childWidth > sizeWidth - getPaddingLeft() - getPaddingRight()) { // 对比得到最大的宽度 width = Math.max(width, lineWidth); // 重置lineWidth lineWidth = childWidth; // 记录行高 height += lineHeight; lineHeight = childHeight; } else // 未换行 { // 叠加行宽 lineWidth += childWidth; // 得到当前行最大的高度 lineHeight = Math.max(lineHeight, childHeight); } // 最后一个控件 if (i == cCount - 1) { width = Math.max(lineWidth, width); height += lineHeight; } } Log.e("TAG", "sizeWidth = " + sizeWidth); Log.e("TAG", "sizeHeight = " + sizeHeight); setMeasuredDimension( // modeWidth == MeasureSpec.EXACTLY ? sizeWidth : width + getPaddingLeft() + getPaddingRight(), modeHeight == MeasureSpec.EXACTLY ? sizeHeight : height + getPaddingTop() + getPaddingBottom()// ); } /** * 存储所有的View */ private List<List<View>> mAllViews = new ArrayList<List<View>>(); /** * 每一行的高度 */ private List<Integer> mLineHeight = new ArrayList<Integer>(); @Override protected void onLayout(boolean changed, int l, int t, int r, int b) { mAllViews.clear(); mLineHeight.clear(); // 当前ViewGroup的宽度 int width = getWidth(); int lineWidth = 0; int lineHeight = 0; List<View> lineViews = new ArrayList<View>(); int cCount = getChildCount(); for (int i = 0; i < cCount; i++) { View child = getChildAt(i); MarginLayoutParams lp = (MarginLayoutParams) child .getLayoutParams(); int childWidth = child.getMeasuredWidth(); int childHeight = child.getMeasuredHeight(); // 如果需要换行 if (childWidth + lineWidth + lp.leftMargin + lp.rightMargin > width - getPaddingLeft() - getPaddingRight()) { // 记录LineHeight mLineHeight.add(lineHeight); // 记录当前行的Views mAllViews.add(lineViews); // 重置我们的行宽和行高 lineWidth = 0; lineHeight = childHeight + lp.topMargin + lp.bottomMargin; // 重置我们的View集合 lineViews = new ArrayList<View>(); } lineWidth += childWidth + lp.leftMargin + lp.rightMargin; lineHeight = Math.max(lineHeight, childHeight + lp.topMargin + lp.bottomMargin); lineViews.add(child); }// for end // 处理最后一行 mLineHeight.add(lineHeight); mAllViews.add(lineViews); // 设置子View的位置 int left = getPaddingLeft(); int top = getPaddingTop(); // 行数 int lineNum = mAllViews.size(); for (int i = 0; i < lineNum; i++) { // 当前行的所有的View lineViews = mAllViews.get(i); lineHeight = mLineHeight.get(i); for (int j = 0; j < lineViews.size(); j++) { View child = lineViews.get(j); // 判断child的状态 if (child.getVisibility() == View.GONE) { continue; } MarginLayoutParams lp = (MarginLayoutParams) child .getLayoutParams(); int lc = left + lp.leftMargin; int tc = top + lp.topMargin; int rc = lc + child.getMeasuredWidth(); int bc = tc + child.getMeasuredHeight(); // 为子View进行布局 child.layout(lc, tc, rc, bc); left += child.getMeasuredWidth() + lp.leftMargin + lp.rightMargin; } left = getPaddingLeft(); top += lineHeight; } } /** * 与当前ViewGroup对应的LayoutParams */ @Override public LayoutParams generateLayoutParams(AttributeSet attrs) { return new MarginLayoutParams(getContext(), attrs); } }
4activity_main.xml文件中引用自定义控件
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity" android:orientation="vertical" > <!-- 流布局中的属性--> <android.zhh.com.myviewgroup.FlowTagGroup android:id="@+id/ftgAttribute" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginLeft="10dp" android:layout_marginRight="10dp" android:layout_marginTop="50dp" > </android.zhh.com.myviewgroup.FlowTagGroup> </LinearLayout>
5MainActivity中使用
package android.zhh.com.myviewgroup; import android.app.Activity; import android.graphics.Color; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.util.Log; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; public class MainActivity extends Activity { // 流布局 private FlowTagGroup ftgAttribute; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initView(); } private void initView(){ ftgAttribute = (FlowTagGroup)findViewById(R.id.ftgAttribute); String mNames[] = { "回复快块块快块块","专业专业专业专业专业", "热情周到", "及时解决","不专业", "态度差", "回复", "态度好" }; ViewGroup.MarginLayoutParams lp = new ViewGroup.MarginLayoutParams( ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); lp.leftMargin = 10; lp.rightMargin = 10; lp.topMargin = 10; lp.bottomMargin = 10; for(int i = 0; i < mNames.length; i ++) { MyTextView myTextView= new MyTextView(this); myTextView.setText(mNames[i]); myTextView.setTextColor(Color.parseColor("#666666")); myTextView.setBackgroundResource(R.drawable.bg_comment_attribute_off); ftgAttribute.addView(myTextView, lp); // 点击事件和拿到数据 myTextView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // 选中状态isSelected=true if(((MyTextView)v).isSelected){ Log.e("111","选中状态"); ((MyTextView) v).setTextColor(Color.parseColor("#ffffff")); ((MyTextView)v).setBackgroundResource(R.drawable.bg_comment_attribute_on); ((MyTextView)v).isSelected=false; } // 不选中状态 else{ Log.e("111", "未选中状态"); ((MyTextView) v).setTextColor(Color.parseColor("#666666")); ((MyTextView)v).setBackgroundResource(R.drawable.bg_comment_attribute_off); ((MyTextView)v).isSelected=true; } // 打印选中的数据 for(int i=0;i<ftgAttribute.getChildCount();i++){ if(((MyTextView)ftgAttribute.getChildAt(i)).isSelected){ }else{ // 选中状态把isSelected都设置成了false Log.d("123"," select text :"+ ((MyTextView)ftgAttribute.getChildAt(i)).getText()); } } } }); } } }
6MyTextView文件（自定义TextView）
package android.zhh.com.myviewgroup; import android.content.Context; import android.widget.TextView; /** * Created by sky on 2017/3/10. */ public class MyTextView extends TextView { // 默认不选中 public boolean isSelected=true; public MyTextView(Context context) { super(context); } }
7drawable目录下按钮点击后的背景bg_comment_attribute_on.xml
<?xml version="1.0" encoding="UTF-8"?> <!-- 顶部带圆角 白色背景 灰色边框 无下边框 长方体 --> <layer-list xmlns:android="http://schemas.android.com/apk/res/android"> <item> <shape> <solid android:color="#4395FF" /> <corners android:topLeftRadius="20dp" android:topRightRadius="20dp" android:bottomRightRadius="20dp" android:bottomLeftRadius="20dp" /> <stroke android:width="0dp" android:color="#ffa8abad" /> <padding android:left="15dp" android:right="15dp" android:top="5dp" android:bottom="5dp" /> </shape> </item> </layer-list>
8drawable目录下按钮点击后的背景bg_comment_attribute_off.xml
<?xml version="1.0" encoding="UTF-8"?> <!-- 顶部带圆角 白色背景 灰色边框 无下边框 长方体 --> <layer-list xmlns:android="http://schemas.android.com/apk/res/android"> <item> <shape> <solid android:color="#ffffff" /> <corners android:topLeftRadius="20dp" android:topRightRadius="20dp" android:bottomRightRadius="20dp" android:bottomLeftRadius="20dp" /> <stroke android:width="1dp" android:color="#E1E1E1" /> <padding android:left="15dp" android:right="15dp" android:top="5dp" android:bottom="5dp" /> </shape> </item> </layer-list>
源码下载：
http://download.csdn.net/download/zhaihaohao1/9776817
