Android使用WindowManager做一个可拖动的控件(七)

效果图如下

Android使用WindowManager做一个可拖动的控件(七)_第1张图片

第一步：新建DragView继承RelativeLayout

packagecom.rong.activity;importcom.rong.test.R;importandroid.content.Context;importandroid.graphics.Color;importandroid.graphics.PixelFormat;importandroid.util.AttributeSet;importandroid.view.Gravity;importandroid.view.MotionEvent;importandroid.view.View;importandroid.view.WindowManager;importandroid.widget.Button;importandroid.widget.RelativeLayout;publicclassDragViewextendsRelativeLayout{privateWindowManagerwindowManager;//用于可拖动的浮动窗口privateWindowManager.LayoutParamswindowParams;//浮动窗口的参数privateButtonmyButton;publicDragView(Contextcontext,AttributeSetattrs){super(context,attrs);init();}privatevoidinit(){View.inflate(getContext(),R.layout.layout_my,this);myButton=newButton(getContext());myButton.setText("我的");myButton.setBackgroundColor(Color.RED);}@OverridepublicbooleanonTouchEvent(MotionEventevent){//获取当前点的xy位置intcurrentX=(int)event.getX();intcurrentY=(int)event.getY();switch(event.getAction()){caseMotionEvent.ACTION_DOWN:if(windowManager==null){setWindowParams(currentX,currentY);windowManager=(WindowManager)getContext().getSystemService(Context.WINDOW_SERVICE);windowManager.addView(myButton,windowParams);}break;caseMotionEvent.ACTION_MOVE:windowParams.x=currentX;windowParams.y=currentY;windowManager.updateViewLayout(myButton,windowParams);break;caseMotionEvent.ACTION_UP://windowManager.removeView(myButton);break;}returntrue;}privatevoidsetWindowParams(intx,inty){//建立item的缩略图windowParams=newWindowManager.LayoutParams();windowParams.gravity=Gravity.TOP|Gravity.LEFT;//这个必须加//得到preview左上角相对于屏幕的坐标windowParams.x=x;windowParams.y=y;//设置宽和高windowParams.width=200;windowParams.height=200;windowParams.flags=WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE|WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE|WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON|WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN;windowParams.format=PixelFormat.TRANSLUCENT;windowParams.windowAnimations=0;}}

第二步：新建布局文件activity_main.xml

<?xmlversion="1.0"encoding="utf-8"?><RelativeLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:id="@+id/main_touchlayout"android:layout_width="match_parent"android:layout_height="match_parent"android:background="#ffffff"android:orientation="vertical"><com.rong.activity.DragViewandroid:id="@+id/main_touchview"android:layout_width="match_parent"android:layout_height="match_parent"android:layout_centerInParent="true"android:background="#ff0000"/></RelativeLayout>

Run

更多相关文章

随机推荐