Android 按键 修复：按Backspace或者delete键有时候不能删掉最近运行

Posted 2022-02-09 王睿丶

frameworks/base/services/core/java/com/android/server/policy/PhoneWindowManager.java
interceptKeyBeforeDispatching方法中

思路：打开最近运行应用界面时，模拟点击方向上键，使最近应用界面获取到焦点，就可以进行删除了

    //wangrui Analog button
    private void sendKeyCode(final int keyCode) 
            new Thread(new Runnable() 
                @Override
                public void run() 
                    try 
                        Instrumentation inst = new Instrumentation();
                        inst.sendKeyDownUpSync(keyCode);
                     catch (Exception e) 
                        e.printStackTrace();
                    
                
            ).start();
    

        // Display task switcher for ALT-TAB.
        if (down && repeatCount == 0 && keyCode == KeyEvent.KEYCODE_TAB) 
            if (mRecentAppsHeldModifiers == 0 && !keyguardOn && isUserSetupComplete()) 
                final int shiftlessModifiers = event.getModifiers() & ~KeyEvent.META_SHIFT_MASK;
                if (KeyEvent.metaStateHasModifiers(shiftlessModifiers, KeyEvent.META_ALT_ON)) 
                    mRecentAppsHeldModifiers = shiftlessModifiers;
                    showRecentApps(true);
                    return -1;
                
            
         else if (!down && mRecentAppsHeldModifiers != 0
                && (metaState & mRecentAppsHeldModifiers) == 0) 
++            sendKeyCode(19);    //wangrui Get focus
            mRecentAppsHeldModifiers = 0;
            hideRecentApps(true, false);