可移动悬浮窗口实现

来源：互联网发布：手持机gps数据采集器编辑：程序博客网时间：2024/04/30 15:11

先直接上代码:(代码中有少量的注解，但都是实现功能的关键)

接口ViewManager中定义了addView、reMoveView、updateView方法，WindManager实现了ViewManager但是没有直接去实现这三个方法，间接的交给WindowManagerGlobal去实现addView、reMoveView、updateView方法。

package com.example.andyshangguan.test_windowmnanger;import android.annotation.SuppressLint;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.LayoutInflater;import android.view.MotionEvent;import android.view.View;import android.view.View.OnTouchListener;import android.view.ViewGroup;import android.view.WindowManager;import android.view.WindowManager.LayoutParams;import android.widget.Toast;@SuppressLint("ServiceCast")public class MainActivity extends Activity {    private View windowView;    private LayoutInflater inflater;    private WindowManager.LayoutParams wL;    private WindowManager windowManager;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initView();    }    private void initView() {       // inflater = getLayoutInflater();        inflater= (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);        windowView = inflater.inflate(R.layout.layout_showwindow, null);        //(ViewGroup)getWindow().getDecorView().findViewById(android.R.id.content));        windowView.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                Toast.makeText(MainActivity.this, "windowView", Toast.LENGTH_SHORT).show();            }        });        windowView.setOnTouchListener(new OnTouchListener() {            @Override            public boolean onTouch(View v, MotionEvent event) {                //getRawX是触摸位置相对于屏幕的坐标，getX是相对于按钮的坐标                float rawx = event.getRawX() - v.getMeasuredWidth() / 2;                float rawy = event.getRawY() - v.getMeasuredHeight() / 2;                switch (event.getAction()) {                    case MotionEvent.ACTION_MOVE:                        Log.e("info", " event.getX()====" + event.getRawX());                        Log.e("info", " event.getY()====" + event.getRawY());                        wL.x = (int) rawx;                        wL.y = (int) rawy;                        windowManager.updateViewLayout(v, wL);                        break;                    default:                        break;                }                return false;            }        });        wL = new WindowManager.LayoutParams(LayoutParams.WRAP_CONTENT,                //TYPE_TOAST类型系统是不需要权限的。如果申明为TYPE_SYSTEM＿ＸＸＸ权限，在AndroidManifest.xml申明权限//参考：http://www.jianshu.com/p/167fd5f47d5c?utm_campaign=maleskine&utm_content=note&utm_medium=writer_share&utm_source=weibo                LayoutParams.WRAP_CONTENT, LayoutParams.TYPE_TOAST, 0, PixelFormat.TRANSPARENT);        wL.flags = LayoutParams.FLAG_NOT_TOUCH_MODAL                | LayoutParams.FLAG_NOT_FOCUSABLE                | LayoutParams.FLAG_SHOW_WHEN_LOCKED;        wL.gravity = Gravity.LEFT | Gravity.TOP;        wL.x = 100;        wL.y = 300;        windowManager = (WindowManager) getSystemService(Context.WINDOW_SERVICE);    }//在布局文件中直接使用的onClik方法    public void showWindow(View v) {        switch (v.getId()) {            case R.id.showWindow:                windowManager.addView(windowView, wL);                break;            default:                break;        }    }}

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