实现悬浮窗功能的service类
package com.example.floatviewdemo.service;
import com.example.floatviewdemo.R;
import android.annotation.SuppressLint;
import android.app.Service;
import android.content.Intent;
import android.graphics.PixelFormat;
import android.os.IBinder;
import android.util.Log;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnTouchListener;
import android.view.WindowManager;
import android.view.WindowManager.LayoutParams;
import android.widget.ImageButton;
import android.widget.LinearLayout;
import android.widget.Toast;
public class FloatViewService extends Service
{
private static final String TAG = "FloatViewService";
//定义浮动窗口布局
private LinearLayout mFloatLayout;
private WindowManager.LayoutParams wmParams;
//创建浮动窗口设置布局参数的对象
private WindowManager mWindowManager;
private ImageButton mFloatView;
@Override
public void onCreate()
{
super.onCreate();
Log.i(TAG, "onCreate");
createFloatView();
}
@SuppressWarnings("static-access")
@SuppressLint("InflateParams") private void createFloatView()
{
wmParams = new WindowManager.LayoutParams();
//通过getApplication获取的是WindowManagerImpl.CompatModeWrapper
mWindowManager = (WindowManager)getApplication().getSystemService(getApplication().WINDOW_SERVICE);
//设置window type
wmParams.type = LayoutParams.TYPE_PHONE;
//设置图片格式，效果为背景透明
wmParams.format = PixelFormat.RGBA_8888;
//设置浮动窗口不可聚焦（实现操作除浮动窗口外的其他可见窗口的操作）
wmParams.flags = LayoutParams.FLAG_NOT_FOCUSABLE;
//调整悬浮窗显示的停靠位置为左侧置顶
wmParams.gravity = Gravity.LEFT | Gravity.TOP;
// 以屏幕左上角为原点，设置x、y初始值，相对于gravity
wmParams.x = 0;
wmParams.y = 152;
//设置悬浮窗口长宽数据
wmParams.width = WindowManager.LayoutParams.WRAP_CONTENT;
wmParams.height = WindowManager.LayoutParams.WRAP_CONTENT;
LayoutInflater inflater = LayoutInflater.from(getApplication());
//获取浮动窗口视图所在布局
mFloatLayout = (LinearLayout) inflater.inflate(R.layout.alert_window_menu, null);
//添加mFloatLayout
mWindowManager.addView(mFloatLayout, wmParams);
//浮动窗口按钮
mFloatView = (ImageButton) mFloatLayout.findViewById(R.id.alert_window_imagebtn);
mFloatLayout.measure(View.MeasureSpec.makeMeasureSpec(0,
View.MeasureSpec.UNSPECIFIED), View.MeasureSpec
.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
//设置监听浮动窗口的触摸移动
mFloatView.setOnTouchListener(new OnTouchListener()
{
boolean isClick;
@SuppressLint("ClickableViewAccessibility") @Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
mFloatView.setBackgroundResource(R.drawable.circle_red);
isClick = false;
break;
case MotionEvent.ACTION_MOVE:
isClick = true;
// getRawX是触摸位置相对于屏幕的坐标，getX是相对于按钮的坐标
wmParams.x = (int) event.getRawX()
- mFloatView.getMeasuredWidth() / 2;
// 减25为状态栏的高度
wmParams.y = (int) event.getRawY()
- mFloatView.getMeasuredHeight() / 2 - 75;
// 刷新
mWindowManager.updateViewLayout(mFloatLayout, wmParams);
return true;
case MotionEvent.ACTION_UP:
mFloatView.setBackgroundResource(R.drawable.circle_cyan);
return isClick;// 此处返回false则属于移动事件，返回true则释放事件，可以出发点击否。
default:
break;
}
return false;
}
});
mFloatView.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
Toast.makeText(FloatViewService.this, "一百块都不给我！", Toast.LENGTH_SHORT).show();
}
});
}
@Override
public void onDestroy()
{
super.onDestroy();
if(mFloatLayout != null)
{
//移除悬浮窗口
mWindowManager.removeView(mFloatLayout);
}
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
}
