image.png

对于一些提示我们并不依赖与任何界面，如上图。

有很多方式可以实现，方式是自定义Toast。但是这种方式在华为手机（还有一些其他手机）上不能点击Toast时间，需要我们自己setOnTouchListener来处理。并且这样使得整个App都会相应Touch事件。需要自己处理。

具体处理思路：自定义Toast，设置setOnTouchListener，然后判断是否在点击的区域，再做触摸防抖处理。虽然麻烦点，也算是完美解决。贴上代码

        Toast mCustomToast = new Toast(HiFrameworkApplication.getInstance());
        mCustomToast.setDuration(Toast.LENGTH_SHORT);
        mCustomToast.setGravity(Gravity.BOTTOM, 0, 0);
        final LayoutInflater inflater = LayoutInflater.from(HiFrameworkApplication.getInstance());
        final View layoutView = inflater.inflate(R.layout.fp_fpbphone_custom_alarm_toast, null);
        RelativeLayout root = layoutView.findViewById(R.id.fp_fpbphone_root);
        TextView mTvTime = layoutView.findViewById(R.id.tv_fp_fpbphone_custom_alarm_toast_time);
        TextView mTvContent = layoutView.findViewById(R.id.tv_fp_fpbphone_custom_alarm_toast_content);
        TextView click = layoutView.findViewById(R.id.tv_fp_fpbphone_custom_alarm_toast_detail);
        mTvTime.setText(time);
        mTvContent.setText(content);
        //有id才可点击
        click.setFocusable(true);
        click.setVisibility(TextUtils.isEmpty(alarmId) ? View.GONE : View.VISIBLE);
        layoutView.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                //判断当前点击位置
                final int rawY = (int) event.getRawY();
                final int rawX = (int) event.getRawX();
                //点击的位置必须大于屏幕高度-控件的高度
                Log.d("azy", "width" + layoutView.getWidth() + "  height" + layoutView.getHeight());

//               判断是不是在区域范围内
                if (isInView(layoutView,rawX,rawY)){
                    LogUtil.d("azy", "mScreenHight " + mScreenHight + "  rawY  " + rawY);
                    if (DuplicateClicksUtil.isFastClick()) {
                        LogUtil.d("azy", "onTouch");
                        EventBus.getDefault().post(new AlarmClickEvent(alarmId));

                        Intent intent =
                                new Intent(HiFrameworkApplication.getInstance(), AlarmDetailActivity.class);
                        Bundle bundle = new Bundle();
                        bundle.putString(Cons.INTENT_ALARM_ID, alarmId);
                        intent.putExtras(bundle);
                        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                        HiFrameworkApplication.getInstance().startActivity(intent);
                    }
                }
                return true;
            }
        });

        try {
            Object mTN;
            mTN = getField(mCustomToast, "mTN");
            if (mTN != null) {
                Object mParams = getField(mTN, "mParams");
                if (mParams != null
                        && mParams instanceof WindowManager.LayoutParams) {
                    final WindowManager.LayoutParams params = (WindowManager.LayoutParams) mParams;
                    //显示与隐藏动画
//                            params.windowAnimations = R.style.ClickToast;
                    //Toast可点击，这里的属性设置很重要
                    params.flags = WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
                            | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
                            | WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH;

                    //设置viewgroup宽高
                    params.width = WindowManager.LayoutParams.MATCH_PARENT; //设置Toast宽度为屏幕宽度
                    params.height = WindowManager.LayoutParams.WRAP_CONTENT; //设置高度


                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

        mCustomToast.setView(layoutView);
        mCustomToast.show();

关于判断对应控件区域的代码如下：

    private Rect mViewRect;
    private boolean isInView(View view,int x, int y){
        if (mViewRect == null){
            mViewRect = new Rect();
        }
        view.getDrawingRect(mViewRect);
        int[] location = new int[2];
        view.getLocationOnScreen(location);
        mViewRect.left = location[0];
        mViewRect.top = location[1];
        mViewRect.right = mViewRect.right + location[0];
        mViewRect.bottom = mViewRect.bottom + location[1];
        return mViewRect.contains(x,y);
    }

实现方式：直接使用WindowManager来添加对应的布局，这个也是不跟Acitivty绑定的全局弹窗，甚至在app退到后台还可以继续显示。当然按照业务需求在必要的时候removeView。

核心代码如下：

 systemService = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        final LayoutInflater inflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        layoutView = inflater.inflate(R.layout.fp_fpbphone_custom_alarm_toast, null);
        WindowManager.LayoutParams params = new WindowManager.LayoutParams();
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            params.type = WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY;
        } else {
            params.type = WindowManager.LayoutParams.TYPE_PHONE;
        }
//这个地方一定要这样设置，不然要么是布局之外不能接受事件，要么是布局里面和返回按键接收不到事件。
        params.flags = WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM
                | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;
        params.gravity = Gravity.TOP | Gravity.LEFT;
        // 设置窗口宽度和高度
        params.width = WindowManager.LayoutParams.WRAP_CONTENT;
        params.height = WindowManager.LayoutParams.WRAP_CONTENT;
        params.x = 50;
        systemService.addView(layoutView,params);

最后，有几个需要注意的点：
1.一定要设置权限。

<!--    弹窗权限-->
    <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />

2.权限在6.0系统以上要手动设置

  @RequiresApi(api = Build.VERSION_CODES.M)
    private void requestPermission() {
        if (!Settings.canDrawOverlays(this)) {
            //未授权限，请求权限
            Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION);
            intent.setData(Uri.parse("package:" + getPackageName()));
            startActivityForResult(intent,0);
        }
    }