android 静音与马达振动流程.doc

android 静音与马达振动流程

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.java

private CheckBoxPreference mSilent;

private CheckBoxPreference mVibrate;

private void setRingerMode(boolean silent, boolean vibrate) {

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

文件: frameworks/base/media/java/android/media/AudioManager.java

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 IaudioService

public static final int VIBRATE_TYPE_RINGER = 0;

service.setVibrateSetting(vibrateType, vibrateSetting);

} catch (RemoteException e) {

Log.e(TAG, "Dead object in setVibrateSetting", e);

}

}

将振动类型和振动设置传给音频接口服务 IaudioService,IaudioService 的定义如下:

frameworks/base/media/java/android/media/IAudioService.aidl

frameworks/base/media/java/android/media/AudioService.java

文件: frameworks/base/media/java/android/media/AudioService.java

文件: frameworks/base/core/java/android/provider/Settings.java

public void setRingerMode(int ringerMode) {

synchronized (mSettingsLock) {

if (ringerMode != mRingerMode) {

setRingerModeInt(ringerMode, true);

// Send sticky broadcast