在当前Activity之上创建悬浮view之WindowManager悬浮窗效果

创建Activity

import android.app.Activity;
import android.content.Context;
import android.graphics.PixelFormat;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.View;
import android.view.WindowManager;
import android.view.View.OnClickListener;
import android.view.WindowManager.LayoutParams;
public class MyFloatViewActivity extends Activity{
private WindowManager wm=null;
private WindowManager.LayoutParams wmParams=null;
private MyFloatView myFV=null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//创建悬浮窗口
createView();
}
private void createView(){
myFV=new MyFloatView(getApplicationContext());
myFV.setImageResource(R.drawable.angry_birds);
//获取WindowManager
wm=(WindowManager)getApplicationContext().getSystemService(Context.WINDOW_SERVICE);
//设置LayoutParams(全局变量）相关参数
wmParams = ((MyApplication)getApplication()).getMywmParams();
wmParams.type=LayoutParams.TYPE_PHONE; //设置window type
wmParams.format=PixelFormat.RGBA_8888; //设置图片格式，效果为背景透明
//设置Window flag
wmParams.flags=LayoutParams.FLAG_NOT_TOUCH_MODAL
| LayoutParams.FLAG_NOT_FOCUSABLE;
wmParams.gravity=Gravity.LEFT|Gravity.TOP; //调整悬浮窗口至左上角
//以屏幕左上角为原点，设置x、y初始值
wmParams.x=0;
wmParams.y=0;
//设置悬浮窗口长宽数据
wmParams.width=40;
wmParams.height=40;
//显示myFloatView图像
wm.addView(myFV, wmParams);
}
@Override
public void onDestroy(){
super.onDestroy();
//在程序退出(Activity销毁）时销毁悬浮窗口
wm.removeView(myFV);
}
}

通过以上实例代码给大家详解了在当前Activity之上创建悬浮view之WindowManager悬浮窗效果的相关知识，希望本文所述对大家有所帮助。

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