Android自定义APP全局悬浮按钮

概述原本想通过framelayout实现一个悬浮在其他控件上的按钮,但是觉得很麻烦,需要各个界面都要动态填充.于是想到了悬浮窗,就自定一个ImageView用于显示全局按钮.

原本想通过framelayout实现一个悬浮在其他控件上的按钮,但是觉得很麻烦,需要各个界面都要动态填充.于是想到了悬浮窗,就自定一个ImageVIEw用于显示全局按钮.

一、首先因为悬浮窗式的所以要添加权限,对于SDK>=23的需要动态获取权限,我这边用的是22的

 <uses-permission androID:name="androID.permission.SYstem_ALERT_WINDOW" />  <uses-permission androID:name="androID.permission.WRITE_SETTINGS"/>

二、通过application获取到全局性的WindowManager的params数据

 private WindowManager.LayoutParams wmParams=new WindowManager.LayoutParams();  public WindowManager.LayoutParams getMywmParams(){    return wmParams;  }

三、自定义ImageVIEw,并实现点击具有状态选择.其中写了一个回调接口用于对点击事件的处理

public class CustomeMovebutton extends ImageVIEw {  private final int statusHeight;  int sW;  int sH;  private float mtouchstartX;  private float mtouchstartY;  private float x;  private float y;  private boolean isMove=false;  private Context context;  private WindowManager wm = (WindowManager) getContext().getApplicationContext().getSystemService(Context.WINDOW_SERVICE);  private WindowManager.LayoutParams wmParams = ((MyApplication) getContext().getApplicationContext()).getMywmParams();  private float mLastX;  private float mLastY;  private float mStartX;  private float mStartY;  private long mDownTime;  private long mUpTime;  private OnSpeakListener Listener;  public CustomeMovebutton(Context context) {    this(context,null);    this.context = context;  }  public CustomeMovebutton(Context context,AttributeSet attrs) {    this(context,attrs,-1);  }  public CustomeMovebutton(Context context,AttributeSet attrs,int defStyleAttr) {    super(context,defStyleAttr);    sW = wm.getDefaultdisplay().getWIDth();    sH = wm.getDefaultdisplay().getHeight();    statusHeight = getStatusHeight(context);  }  /**   * 状态栏的高度   *   */  public static int getStatusHeight(Context context) {    int statusHeight = -1;    try {      Class clazz = Class.forname("com.androID.internal.R$dimen");  //使用反射获取实例      Object object = clazz.newInstance();      int height = Integer.parseInt(clazz.getFIEld("status_bar_height")          .get(object).toString());      statusHeight = context.getResources().getDimensionPixelSize(height);    } catch (Exception e) {      e.printstacktrace();    }    return statusHeight;  }  @OverrIDe  public boolean ontouchEvent(MotionEvent event) {    //获取相对屏幕的坐标，即以屏幕左上角为原点    x = event.getRawX();    y = event.getRawY() - statusHeight;  //statusHeight是系统状态栏的高度    switch (event.getAction()) {      case MotionEvent.ACTION_DOWN:  //按下        setimageResource(R.drawable.btn_voice_pressed);        mtouchstartX = event.getX();        mtouchstartY = event.getY();        mStartX = event.getRawX();        mStartY = event.getRawY();        mDownTime = System.currentTimeMillis();        isMove = false;        break;      case MotionEvent.ACTION_MOVE:  //手指移动        updateVIEwposition();        isMove = true;        break;      case MotionEvent.ACTION_UP:  //手抬起        setimageResource(R.drawable.btn_voice_rest);        mLastX = event.getRawX();        mLastY = event.getRawY();        mUpTime = System.currentTimeMillis();        //按下到抬起的时间大于500毫秒,并且抬手到抬手绝对值大于20像素处理点击事件        if(mUpTime - mDownTime < 500){          if(Math.abs(mStartX- mLastX )< 20.0 && Math.abs(mStartY - mLastY) < 20.0){              if (Listener!=null){                Listener.onSpeakListener();              }          }        }        break;    }    return true;  }  private voID updateVIEwposition() {    wmParams.x = (int) (x - mtouchstartX);    wmParams.y = (int) (y- mtouchstartY);    wm.updateVIEwLayout(this,wmParams); //刷新显示  }  /**   * 设置点击回调接口   */  public interface OnSpeakListener{    voID onSpeakListener();  }  public voID setonSpeakListener(OnSpeakListener Listener){    this.Listener=Listener;  }}

四、Activity中使用,其中有设置图片的参数和位置参数

public class MainActivity extends AppCompatActivity{  private WindowManager wm;  private WindowManager.LayoutParams wmParams;  private CustomeMovebutton CustomeMovebutton;  @OverrIDe  protected voID onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentVIEw(R.layout.activity_main);    wm = (WindowManager) getApplicationContext().getSystemService(Context.WINDOW_SERVICE);    displayMetrics dm = getResources().getdisplayMetrics();    int wIDthPixels = dm.wIDthPixels;    int heightPixels = dm.heightPixels;    wmParams = ((MyApplication) getApplication()).getMywmParams();    wmParams.type = WindowManager.LayoutParams.TYPE_SYstem_ALERT;    wmParams.format= PixelFormat.RGBA_8888;//设置背景图片    wmParams.flags= WindowManager.LayoutParams.FLAG_NOT_touch_MODAL | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE ;//    wmParams.gravity = Gravity.left|Gravity.top;//    wmParams.x = wIDthPixels-150;  //设置位置像素    wmParams.y = heightPixels-110;    wmParams.wIDth=200; //设置图片大小    wmParams.height=200;    CustomeMovebutton = new CustomeMovebutton(getApplicationContext());    CustomeMovebutton.setimageResource(R.drawable.btn_voice_rest);    wm.addVIEw(CustomeMovebutton,wmParams);    CustomeMovebutton.setonSpeakListener(new CustomeMovebutton.OnSpeakListener() {      @OverrIDe      public voID onSpeakListener() {        Toast.makeText(MainActivity.this,"点击事件",Toast.LENGTH_SHORT).show();      }    });  }  @OverrIDe  protected voID onDestroy() {    super.onDestroy();    if(CustomeMovebutton != null){      wm.removeVIEw(CustomeMovebutton);    }  }}

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