PopupWindow弹出效果
MainActivity如下:
package com.cn.testpopupwindow;import android.app.Activity;import android.graphics.drawable.BitmapDrawable;import android.os.Bundle;import android.view.Gravity;import android.view.KeyEvent;import android.view.LayoutInflater;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup.LayoutParams;import android.widget.Button;import android.widget.PopupWindow;public class MainActivity extends Activity { private Button button; private Button button1; private Button button2; private Button button3; private Button button4; private View popupWindowView; private PopupWindow popupWindow; private LayoutInflater inflater; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); button=(Button) findViewById(R.id.button); button.setOnClickListener(new ButtonOnClickListener()); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.main, menu); return true; } private class ButtonOnClickListener implements OnClickListener{public void onClick(View v) {inflater=(LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE);popupWindowView=inflater.inflate(R.layout.popupwindow, null);popupWindow=new PopupWindow(popupWindowView, LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT,true);//必须要有这句否则弹出popupWindow后监听不到Back键popupWindow.setBackgroundDrawable(new BitmapDrawable());popupWindow.showAtLocation(findViewById(R.id.button), Gravity.NO_GRAVITY, 0, 0);//让popupWindow获得焦点popupWindow.setFocusable(true);//设置动画popupWindow.setAnimationStyle(R.style.popupWindowAnimation);popupWindow.update();//popupWindow中按钮的处理button1=(Button) popupWindowView.findViewById(R.id.button1);button2=(Button) popupWindowView.findViewById(R.id.button2);button3=(Button) popupWindowView.findViewById(R.id.button3);button4=(Button) popupWindowView.findViewById(R.id.button4);button1.setOnClickListener(new ButtonsOnClickListener());button2.setOnClickListener(new ButtonsOnClickListener());button3.setOnClickListener(new ButtonsOnClickListener());button4.setOnClickListener(new ButtonsOnClickListener());} } private class ButtonsOnClickListener implements OnClickListener {public void onClick(View v) {switch (v.getId()) {case R.id.button1: System.out.println("点击了按钮1");break;case R.id.button2: System.out.println("点击了按钮2");break;case R.id.button3: System.out.println("点击了按钮3");break;case R.id.button4: System.out.println("点击了按钮4");break;default:break;}}}//监听Back事件@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {if (keyCode==KeyEvent.KEYCODE_BACK) {if (popupWindow!=null&&popupWindow.isShowing()) {popupWindow.dismiss();} else { MainActivity.this.finish();}}return super.onKeyDown(keyCode, event);}}
Main.xml如下:
<RelativeLayout 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" > <Button android:id="@+id/button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="test" android:layout_centerInParent="true" /> </RelativeLayout>
popupwindow.xml如下:
<?xml version="1.0" encoding="utf-8"?><!--注意:在RelativeLayout里面是LinearLayout,且是vertical的--><!--第一个Button的 layout_marginTop是相对于父控件而言的--><!--但是第二个Button的layout_marginTop是相对于第一个Button而言的 --><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#f0838b8b" android:orientation="vertical" > <LinearLayout android:id="@+id/linerLayout" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:orientation="vertical" > <Button android:id="@+id/button1" android:layout_width="200dip" android:layout_height="wrap_content" android:text="Button1" android:textSize="20sp" android:layout_gravity="center_horizontal" android:layout_marginTop="20dip" /> <Button android:id="@+id/button2" android:layout_width="200dip" android:layout_height="wrap_content" android:text="Button2" android:textSize="20sp" android:layout_gravity="center_horizontal" android:layout_marginTop="20dip" /> <Button android:id="@+id/button3" android:layout_width="200dip" android:layout_height="wrap_content" android:text="Button3" android:textSize="20sp" android:layout_gravity="center_horizontal" android:layout_marginTop="20dip" /> <Button android:id="@+id/button4" android:layout_width="200dip" android:layout_height="wrap_content" android:text="Button4" android:textSize="20sp" android:layout_gravity="center_horizontal" android:layout_marginTop="20dip" /> </LinearLayout> </RelativeLayout>
style.xml如下
<resources xmlns:android="http://schemas.android.com/apk/res/android"> <style name="AppTheme" parent="android:Theme.Light" /> <style name="popupWindowAnimation" mce_bogus="1" parent="android:Animation"> <item name="android:windowEnterAnimation">@anim/enter</item> <item name="android:windowExitAnimation">@anim/exit</item> </style></resources>
enter.xml动画如下:
<?xml version="1.0" encoding="utf-8"?><!-- android:fromYDelta:动画开始的点离当前View X坐标上的差值 --><!-- 利用100%p表示该动画在当前View的最下方 --><set xmlns:android="http://schemas.android.com/apk/res/android"> <translate android:duration="1500" android:fromYDelta="100%p" android:interpolator="@android:anim/decelerate_interpolator" android:toYDelta="0" /></set>
exit.xml动画如下:
<?xml version="1.0" encoding="utf-8"?><!-- Alpha=1.0表示不透明,Alpha=0.0表示透明 --><set xmlns:android="http://schemas.android.com/apk/res/android" android:interpolator="@android:anim/decelerate_interpolator" > <alpha android:duration="1000" android:fromAlpha="1.0" android:toAlpha="0.0" /></set>