内容简介:原本我是想在BaseActivity的DecorView层添加一个View,奈何之前同事的Activity继承的五花八门。正好业务需要在因为要在手机上显示,所以必须用service来实现
原本我是想在BaseActivity的DecorView层添加一个View,奈何之前同事的Activity继承的五花八门。正好业务需要在 手机桌面 上显示一个可拖拽的FloatView。
使用到的权限
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
实现
因为要在手机上显示,所以必须用service来实现
public class CurrentNavigateFloatViewService 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 ImageView mFloatView; @Override public void onCreate() { super.onCreate(); createFloatView(); } private int lastX; private int dy; @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); int LAYOUT_FLAG; if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { LAYOUT_FLAG = WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY; } else { LAYOUT_FLAG = WindowManager.LayoutParams.TYPE_PHONE; } //设置window type wmParams.type = LAYOUT_FLAG; // wmParams.type = WindowManager.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 = WindowManager.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.float_navigator, null); //添加mFloatLayout mWindowManager.addView(mFloatLayout, wmParams); //浮动窗口按钮 mFloatView = (ImageView) mFloatLayout.findViewById(R.id.imgVew_float_view); 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 View.OnTouchListener() { boolean isClick; @SuppressLint("ClickableViewAccessibility") @Override public boolean onTouch(View v, MotionEvent event) { int dx = 0; switch (event.getAction()) { case MotionEvent.ACTION_DOWN: // mFloatView.setBackgroundResource(R.drawable.circle_red); isClick = false; lastX = (int) event.getRawX(); break; case MotionEvent.ACTION_MOVE: dx = (int) event.getRawX() - lastX; 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: //靠边移动 int screenWidthHalf = ScreenUtil.getScreenWidth(CurrentNavigateFloatViewService.this) / 2; int left = 0; int right = ScreenUtil.getScreenWidth(CurrentNavigateFloatViewService.this) - mFloatLayout.getMeasuredWidth(); if (wmParams.x >= screenWidthHalf) { wmParams.x = right; mWindowManager.updateViewLayout(mFloatLayout, wmParams); } else { wmParams.x = left; mWindowManager.updateViewLayout(mFloatLayout, wmParams); } 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 View.OnClickListener() { @Override public void onClick(View v) { Toast.makeText(CurrentNavigateFloatViewService.this, "取消", 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; } }
WindowPermissionCheck.java
public class WindowPermissionCheck { public static boolean checkPermission(Activity activity){ if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && !Settings.canDrawOverlays(activity)) { Toast.makeText(activity, "当前无权限,请授权", Toast.LENGTH_SHORT).show(); activity.startActivityForResult( new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION, Uri.parse("package:" + activity.getPackageName())), 0); return false; } return true; } public static void onActivityResult(Activity activity, int requestCode, int resultCode, Intent data, OnWindowPermissionListener onWindowPermissionListener) { if (requestCode == 0) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && !Settings.canDrawOverlays(activity)) { Toast.makeText(activity.getApplicationContext(), "授权失败", Toast.LENGTH_SHORT).show(); if(onWindowPermissionListener!=null) onWindowPermissionListener.onFailure(); }else { Toast.makeText(activity.getApplicationContext(), "授权成功", Toast.LENGTH_SHORT).show(); if(onWindowPermissionListener!=null) onWindowPermissionListener.onSuccess(); } } } public interface OnWindowPermissionListener{ void onSuccess(); void onFailure(); } }
调用
因为要在手机上显示,即需要”在其他APP的上层“显示,在Android6.0以上,需要用户来”允许显示在其他应用的上层”
调用
if (WindowPermissionCheck.checkPermission(MainActivity.this)) { Intent intent = new Intent(MainActivity.this, CurrentNavigateFloatViewService.class); //启动FloatViewService startService(intent); }
以上就是本文的全部内容,希望本文的内容对大家的学习或者工作能带来一定的帮助,也希望大家多多支持 码农网
猜你喜欢:本站部分资源来源于网络,本站转载出于传递更多信息之目的,版权归原作者或者来源机构所有,如转载稿涉及版权问题,请联系我们。
Effective Python
布雷特·斯拉特金(Brett Slatkin) / 爱飞翔 / 机械工业出版社 / 2016-1 / 59
用Python编写程序,是相当容易的,所以这门语言非常流行。但若想掌握Python所特有的优势、魅力和表达能力,则相当困难,而且语言中还有很多隐藏的陷阱,容易令开发者犯错。 本书可以帮你掌握真正的Pythonic编程方式,令你能够完全发挥出Python语言的强大功能,并写出健壮而高效的代码。Scott Meyers在畅销书《Effective C++》中开创了一种以使用场景为主导的精练教学方......一起来看看 《Effective Python》 这本书的介绍吧!