Popupwindow的使用

PopupWindow在Android.widget包下，项目中经常会使用到PopupWindow做菜单选项，  PopupWindow这个类用来实现一个弹出框，可以使用任意布局的View作为其内容，这个弹出框是悬浮在当前activity之上的。

MainActivity.java

[代码]java代码：

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public class MainActivity   extends Activityimplements   OnClickListener {                private PopupWindow mPopWindow;           private View parentView;           private Context context;           ImageView   mImageViewBar;                @Override           protected voidonCreate(Bundle savedInstanceState)   {                     super.onCreate(savedInstanceState);                       requestWindowFeature(Window.FEATURE_NO_TITLE);                       setContentView(R.layout.activity_main);                       context   = this;                     initView();          }               private void initView() {          //   TODOAuto-generated method stub            parentView   =getLayoutInflater().inflate(R.layout.activity_main,null);            mImageViewBar   =(ImageView) findViewById(R.id.menu);            mImageViewBar.setOnClickListener(this);              showPopupWindow();         }             private void showPopupWindow() {             LayoutInflater   inflater = (LayoutInflater)context              .getSystemService(Context.LAYOUT_INFLATER_SERVICE);              View   contentView =inflater.inflate(R.layout.popuplayout,null);            mPopWindow   = newPopupWindow(contentView);            mPopWindow.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT);              mPopWindow.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT);              mPopWindow   = newPopupWindow();            //   设置SelectPicPopupWindow的View            mPopWindow.setContentView(contentView);              //   设置SelectPicPopupWindow弹出窗体的宽            mPopWindow.setWidth(LayoutParams.WRAP_CONTENT);              //   设置SelectPicPopupWindow弹出窗体的高            mPopWindow.setHeight(LayoutParams.WRAP_CONTENT);              //   设置SelectPicPopupWindow弹出窗体可点击           mPopWindow.setFocusable(true);             mPopWindow.setOutsideTouchable(true);             //   刷新状态             mPopWindow.update();             //   实例化一个ColorDrawable颜色为半透明           ColorDrawable   dw = new ColorDrawable(0000000000);             //   点back键和其他地方使其消失,设置了这个才能触发OnDismisslistener，设置其他控件变化等操作           mPopWindow.setBackgroundDrawable(dw);             contentView.findViewById(R.id.memu1).setOnClickListener(this);             contentView.findViewById(R.id.memu2).setOnClickListener(this);             contentView.findViewById(R.id.memu3).setOnClickListener(this);          }                @Override        public void onClick(View v) {           int id =v.getId();           switch (id) {             case R.id.menu:                   mPopWindow.showAsDropDown(mImageViewBar);                     break;               case R.id.memu1: {                   Toast.makeText(context,"消息",   Toast.LENGTH_SHORT).show();                   mPopWindow.dismiss();                   }                    break;               case R.id.memu2: {                  Toast.makeText(context,"收藏",   Toast.LENGTH_SHORT).show();                  mPopWindow.dismiss();                  }                   break;               case R.id.memu3: {                  Toast.makeText(context,"首页",   Toast.LENGTH_SHORT).show();                  mPopWindow.dismiss();                  }                   break;                 }          }                @Override         protected void onDestroy() {             //   TODOAuto-generated method stub              super.onDestroy();               mPopWindow.dismiss();         }    }

 

 

[代码]xml代码：

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activity_main.xml  <?xml version="1.0" encoding="utf-8"?>  <LinearLayoutxmlns:androidLinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"      android:layout_width="match_parent"      android:layout_height="match_parent"      android:background="#FFFFFF"      android:orientation="vertical">             <RelativeLayout          android:layout_width="match_parent"          android:layout_height="wrap_content"          android:background="#E4E4E4"          android:minHeight="55dp">                 <ImageView              android:layout_width="20dp"              android:layout_height="20dp"              android:layout_centerVertical="true"              android:layout_marginLeft="8dp"              android:layout_marginRight="5dp"              android:focusable="true"              android:src="@drawable/abc_ic_ab_back_mtrl_am_alpha"/>                 <ImageView              android:id="@+id/menu"              android:layout_width="20dp"              android:layout_height="20dp"              android:layout_alignParentRight="true"              android:layout_centerVertical="true"              android:layout_marginRight="9dp"              android:src="@drawable/top_arrow_message1"/>        </RelativeLayout>         </LinearLayout>  popuplayout.xml  <?xml version="1.0" encoding="utf-8"?>  <LinearLayoutxmlns:androidLinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"      android:layout_width="match_parent"      android:layout_height="wrap_content"      android:gravity="center"      android:orientation="vertical">             <LinearLayout          android:layout_width="120dp"          android:layout_height="130dp"          android:layout_marginRight="2dp"          android:background="@drawable/danchu"          android:gravity="center_vertical"          android:orientation="vertical">                 <RelativeLayout              android:id="@+id/memu1"              android:layout_width="wrap_content"              android:layout_height="30dp"              android:layout_marginTop="5dp"              android:gravity="center_vertical">                     <ImageView                  android:id="@+id/xiaoxi"                  android:layout_width="20dp"                  android:layout_height="20dp"                  android:layout_marginLeft="10dp"                  android:src="@drawable/android_arrow_application"/>                     <TextView                  android:id="@+id/pop_computer"                  android:layout_width="wrap_content"                  android:layout_height="wrap_content"                  android:layout_marginLeft="10dp"                  android:layout_toRightOf="@+id/xiaoxi"                  android:text="消息"                  android:textColor="#FFFFFF"/>            </RelativeLayout>                 <View              android:layout_width="wrap_content"              android:layout_height="1dp"/>                 <RelativeLayout              android:id="@+id/memu2"              android:layout_width="wrap_content"              android:layout_height="30dp"              android:layout_marginTop="5dp"              android:gravity="center_vertical">                     <ImageView                  android:id="@+id/shanchu"                  android:layout_width="20dp"                  android:layout_height="20dp"                  android:layout_marginLeft="10dp"                  android:src="@drawable/android_arrow_profitbillsm"/>                     <TextView                  android:layout_width="wrap_content"                  android:layout_height="wrap_content"                  android:layout_marginLeft="10dp"                  android:layout_toRightOf="@+id/shanchu"                  android:text="收藏"                  android:textColor="#FFFFFF"/>            </RelativeLayout>                 <View              android:layout_width="wrap_content"              android:layout_height="1dp"/>                 <RelativeLayout              android:id="@+id/memu3"              android:layout_width="wrap_content"              android:layout_height="30dp"              android:layout_marginBottom="5dp"              android:layout_marginTop="5dp"              android:gravity="center_vertical">                     <ImageView                  android:id="@+id/dianjifanhui"                  android:layout_width="18dp"                  android:layout_height="20dp"                  android:layout_marginLeft="10dp"                  android:src="@drawable/dir15"/>                     <TextView                  android:id="@+id/pop_manage"                  android:layout_width="wrap_content"                  android:layout_height="wrap_content"                  android:layout_marginLeft="10dp"                  android:layout_toRightOf="@+id/dianjifanhui"                  android:text="首页"                  android:textColor="#FFFFFF"/>            </RelativeLayout>                 <View              android:layout_width="wrap_content"              android:layout_height="1dp"/>        </LinearLayout>         </LinearLayout>

项目源码：

Eclipse: http://download.csdn.net/detail/dickyqie/9615658

AndroidStudio: https://github.com/DickyQie/android-basic-control

原文链接：http://www.apkbus.com/blog-894741-63323.html