Android自定义APP全局悬浮按钮

2023-09-17 10:57:05 55

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

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

privateWindowManager.LayoutParamswmParams=newWindowManager.LayoutParams();
publicWindowManager.LayoutParamsgetMywmParams(){
returnwmParams;
}

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

publicclassCustomeMovebuttonextendsImageView{
privatefinalintstatusHeight;
intsW;
intsH;
privatefloatmTouchStartX;
privatefloatmTouchStartY;
privatefloatx;
privatefloaty;
privatebooleanisMove=false;
privateContextcontext;
privateWindowManagerwm=(WindowManager)getContext().getApplicationContext().getSystemService(Context.WINDOW_SERVICE);
privateWindowManager.LayoutParamswmParams=((MyApplication)getContext().getApplicationContext()).getMywmParams();
privatefloatmLastX;
privatefloatmLastY;
privatefloatmStartX;
privatefloatmStartY;
privatelongmDownTime;
privatelongmUpTime;
privateOnSpeakListenerlistener;

publicCustomeMovebutton(Contextcontext){
this(context,null);
this.context=context;
}
publicCustomeMovebutton(Contextcontext,AttributeSetattrs){
this(context,attrs,-1);
}
publicCustomeMovebutton(Contextcontext,AttributeSetattrs,intdefStyleAttr){
super(context,attrs,defStyleAttr);
sW=wm.getDefaultDisplay().getWidth();
sH=wm.getDefaultDisplay().getHeight();
statusHeight=getStatusHeight(context);
}

/**
*状态栏的高度
*
*/
publicstaticintgetStatusHeight(Contextcontext){
intstatusHeight=-1;
try{
Classclazz=Class.forName("com.android.internal.R$dimen");//使用反射获取实例
Objectobject=clazz.newInstance();
intheight=Integer.parseInt(clazz.getField("status_bar_height")
.get(object).toString());
statusHeight=context.getResources().getDimensionPixelSize(height);
}catch(Exceptione){
e.printStackTrace();
}
returnstatusHeight;
}
@Override
publicbooleanonTouchEvent(MotionEventevent){
//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()){
caseMotionEvent.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;
caseMotionEvent.ACTION_MOVE://手指移动
updateViewPosition();
isMove=true;
break;
caseMotionEvent.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;
}
returntrue;
}

privatevoidupdateViewPosition(){
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
*/
publicinterfaceOnSpeakListener{
voidonSpeakListener();
}
publicvoidsetOnSpeakListener(OnSpeakListenerlistener){
this.listener=listener;
}
}

四、Activity中使用,其中有设置图片的参数和位置参数

publicclassMainActivityextendsAppCompatActivity{

privateWindowManagerwm;
privateWindowManager.LayoutParamswmParams;
privateCustomeMovebuttonCustomeMovebutton;
@Override
protectedvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
wm=(WindowManager)getApplicationContext().getSystemService(Context.WINDOW_SERVICE);
DisplayMetricsdm=getResources().getDisplayMetrics();
intwidthPixels=dm.widthPixels;
intheightPixels=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=newCustomeMovebutton(getApplicationContext());
CustomeMovebutton.setImageResource(R.drawable.btn_voice_rest);
wm.addView(CustomeMovebutton,wmParams);
CustomeMovebutton.setOnSpeakListener(newCustomeMovebutton.OnSpeakListener(){
@Override
publicvoidonSpeakListener(){
Toast.makeText(MainActivity.this,"点击事件",Toast.LENGTH_SHORT).show();
}
});
}

@Override
protectedvoidonDestroy(){
super.onDestroy();
if(CustomeMovebutton!=null){
wm.removeView(CustomeMovebutton);
}
}
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持毛票票。

Android自定义APP全局悬浮按钮

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