安卓弹出窗口案例
http://bbs.zecoki.com/data/attachment/common/cf/102311q362klb36li21t72.png一.弹出窗体1.弹出窗体一定注意关闭2.弹出窗体要播放动画，必须有背景资源[*]1.弹出窗体一定注意关闭2.弹出窗体要播放动画，必须有背景资源
二.源代码MainActivity
[*]package com.itheima62.popupwindowdemo;
[*]
[*]import android.app.Activity;
[*]import android.content.Context;
[*]import android.graphics.Color;
[*]import android.graphics.drawable.ColorDrawable;
[*]import android.os.Bundle;
[*]import android.view.Gravity;
[*]import android.view.Menu;
[*]import android.view.View;
[*]import android.view.animation.AlphaAnimation;
[*]import android.view.animation.Animation;
[*]import android.view.animation.ScaleAnimation;
[*]import android.widget.PopupWindow;
[*]import android.widget.RelativeLayout.LayoutParams;
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[*]public class MainActivity extends Activity {
[*]
[*] private PopupWindow pw;
[*] private AlphaAnimation aa;
[*] private View contentView;
[*] private ScaleAnimation sa;
[*]
[*] @Override
[*] protected void onCreate(Bundle savedInstanceState) {
[*] super.onCreate(savedInstanceState);
[*] setContentView(R.layout.activity_main);
[*] initPopup();
[*] }
[*]
[*] /**
[*] * 初始化弹出窗体
[*] */
[*] private void initPopup() {
[*] contentView = View.inflate(getApplicationContext(), R.layout.popup, null);
[*]
[*] pw = new PopupWindow(contentView , -2, -2);
[*]
[*] sa = new ScaleAnimation(
[*] 1, 1,
[*] 0, 1,
[*] Animation.RELATIVE_TO_SELF, 0.5f,
[*] Animation.RELATIVE_TO_SELF, 0f );
[*] sa.setDuration(1000);
[*]
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[*] }
[*]
[*] /**
[*] * 弹出窗体
[*] * @param v
[*] */
[*] public void popupWindow(View v){
[*] if ( pw != null && pw.isShowing()) {
[*] pw.dismiss();
[*] } else {
[*] int[] location = new int;
[*] /**
[*] * 1，父组件
[*] * 2，对齐方式
[*] * 3， x坐标
[*] * 4，y坐标
[*] */
[*] v.getLocationInWindow(location );
[*] System.out.println("x:" + location + ",y:" + location);
[*] //设置弹出窗体的背景
[*] pw.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
[*] contentView.startAnimation(sa);
[*] pw.showAtLocation(v, Gravity.LEFT | Gravity.TOP, location + v.getWidth(), location + v.getHeight());
[*]
[*] }
[*] }
[*]
[*] @Override
[*] protected void onDestroy() {
[*] // TODO Auto-generated method stub
[*] if (pw != null && pw.isShowing()) {
[*] pw.dismiss();
[*] pw = null;
[*] }
[*] super.onDestroy();
[*] }
[*]
[*] @Override
[*] public boolean onCreateOptionsMenu(Menu menu) {
[*] // Inflate the menu; this adds items to the action bar if it is present.
[*] getMenuInflater().inflate(R.menu.main, menu);
[*] return true;
[*] }
[*]}
layoutactivity.xml
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popup.xml
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AndroidManifest.xml
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strings.xml
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[*] PopupWindowDemo
[*] Settings
[*] Hello world!
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