一、给自定义按键添加广播

修改PhoneWindowManager.java中的interceptKeyBeforeDispatching方法

/frameworks/base/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java

@Override public long interceptKeyBeforeDispatching(WindowState win, KeyEvent event, int policyFlags) { final boolean keyguardOn = keyguardOn(); final int keyCode = event.getKeyCode(); final int repeatCount = event.getRepeatCount(); final int metaState = event.getMetaState(); final int flags = event.getFlags(); final boolean down = event.getAction() == KeyEvent.ACTION_DOWN; final boolean canceled = event.isCanceled(); final boolean longPress = (flags & KeyEvent.FLAG_LONG_PRESS) != 0; final boolean virtualKey = event.getDeviceId() == KeyCharacterMap.VIRTUAL_KEYBOARD; final String isCitKeyTest=SystemProperties.get("persist.sys.startCitKeyTest"); //添加自定义按键广播----开始 switch (keyCode) { case 135: case 136: case 137: case 139: { if (repeatCount == 0) { Intent myKeyIntent = new Intent(); if(down) { myKeyIntent.setAction("com.rscja.android.KEY_DOWN"); } else { myKeyIntent.setAction("com.rscja.android.KEY_UP"); } myKeyIntent.putExtra("keycode", keyCode); mContext.sendBroadcastAsUser(myKeyIntent, UserHandle.ALL); } } break; } //添加自定义按键广播----结束……………………}

二、通过广播给当前焦点输入框赋值

修改InputMethodService.java中的onCreate()方法

/frameworks/base/core/java/android/inputmethodservice/InputMethodService.java

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