private final WindowManager.LayoutParams mParams = new WindowManager.LayoutParams();public void showToast(String incomingNumber) {        final WindowManager.LayoutParams params = mParams;        params.height = WindowManager.LayoutParams.WRAP_CONTENT;        params.width = WindowManager.LayoutParams.WRAP_CONTENT;        params.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE//                | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE    默认能够被触摸                | WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON;        params.format = PixelFormat.TRANSLUCENT;        //在响铃的时候显示吐司,和电话类型一致        params.type = WindowManager.LayoutParams.TYPE_PHONE;        params.setTitle("Toast");                //指定吐司的所在位置(将吐司指定在左上角)        params.gravity = Gravity.LEFT+Gravity.TOP;                //吐司显示效果(吐司布局文件),xml-->view(吐司),将吐司挂在到windowManager窗体上        mViewToast = View.inflate(this, R.layout.toast_view, null);        tv_toast = (TextView) mViewToast.findViewById(R.id.tv_toast);                //从sp中获取色值文字的索引,匹配图片,用作展示        mDrawableIds = new int[]{                R.drawable.call_locate_white,                R.drawable.call_locate_orange,                R.drawable.call_locate_blue,                R.drawable.call_locate_gray,                R.drawable.call_locate_green};        int toastStyleIndex = SpUtil.getInt(getApplicationContext(), ConstantValue.TOAST_STYLE, 0);        tv_toast.setBackgroundResource(mDrawableIds[toastStyleIndex]);                //在窗体上挂在一个view(权限)        mWM.addView(mViewToast, params);                    }<!-- 在窗体上挂在view的权限 -->    <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>