Android和大家分享几个重要的代码(一).docVIP

Android和大家分享几个重要的代码（一）1，设置静音和振动　　静音和振动都属于来电后的动作.所以在设置静音和振动时都只是设置一些标识，并往数据库写入相应标识.　　文件：packages/apps/settings/src/com/Android/settings/SoundAndDisplaySettings.Javajava代码：private CheckBoxPreference mSilent; private CheckBoxPreference mVibrate; private void setRingerMode(boolean silent, boolean vibrate) { if (silent) { mAudioManager.setRingerMode(vibrate ? AudioManager.RINGER_MODE_VIBRATE : AudioManager.RINGER_MODE_SILENT); } else { mAudioManager.setRingerMode(AudioManager.RINGER_MODE_NORMAL); mAudioManager.setVibrateSetting(AudioManager.VIBRATE_TYPE_RINGER, vibrate ? AudioManager.VIBRATE_SETTING_ON : AudioManager.VIBRATE_SETTING_OFF); } } public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) { if (preference == mSilent || preference == mVibrate) { setRingerMode(mSilent.isChecked(), mVibrate.isChecked()); if (preference == mSilent) updateState(false); }  静音和振动是复选框按钮，两个中有一个发生变化时调用setRingerMode对状态进行设置；如下状态描术：　　RINGER_MODE_SILENT 静音，且无振动　　RINGER_MODE_VIBRATE 静音，但有振动　　RINGER_MODE_NORMAL 正常声音，振动开关由setVibrateSetting决定.　　铃响模式的设置是通过mAudioManager（音频管理器）来实现的.　　2 音频管理器服务　　mAudioManager所在服务如下：　　文件： frameworks/base/media/java/android/media/AudioManager.javajava代码： public static final int RINGER_MODE_SILENT = 0; public static final int RINGER_MODE_VIBRATE = 1; public static final int RINGER_MODE_NORMAL = 2; public void setRingerMode(int ringerMode) { IAudioService service = getService(); try { service.setRingerMode(ringerMode); } catch (RemoteException e) { Log.e(TAG, Dead object in setRingerMode, e); } }  将铃响模式值传给音频接口服务IaudioServicejava代码： public static final int VIBRATE_TYPE_RINGER = 0; public static final int VIBRATE_TYPE_NOTIFICATION = 1; public static final int VIBRATE_SETTING_OFF = 0; public static final int VIBRATE_SETTING_ON = 1; public static final int VIBRATE_SETTING_ONLY_SILENT = 2; public void setVibrateSetting(int vibrateTyp , int vibrateSetting) { IAudioService service = getService(); try { service.setVibra