先說一下我的功能需求。定制andorid系統,有個mic控制鍵,當點選這個鍵時,會在狀态欄出現mic狀态的圖示。
1.frameworks/base / core/res/res/values/config.xml
<string-array>
... ...
<item><xliff:g id="id">@string/status_bar_mic_mute</xliff:g></item>
</string-array>
... ...
<string translatable="false" name="status_bar_mic_mute">mic_mute</string>
2.core/ res/res/values/symbols.xml
<java-symbol type="string" name="status_bar_mic_mute" />
3. frameworks/base / packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBarPolicy.java
//MIC
mIconController.setIcon(mSlotMicMute,com.android.internal.R.drawable.ic_mic_mute,null);
mIconController.setIconVisibility(mSlotMicMute, false);
// TTY status
mIconController.setIcon(mSlotTty, R.drawable.stat_sys_tty_mode, null);
mIconController.setIconVisibility(mSlotTty, false);
// bluetooth status
updateBluetooth();
// Alarm clock
mIconController.setIcon(mSlotAlarmClock, R.drawable.stat_sys_alarm, null);
mIconController.setIconVisibility(mSlotAlarmClock, false);
如其他代碼一樣,添加mic的代碼。其中的 mSlotMicMute變量,請按照mSlotTty的方式去得到。
mSlotMicMute = context.getString(com.android.internal.R.string.status_bar_mic_mute);
需要在framework/base/core/res/res/values/strings.xml中定義。(向安卓系統中添加圖檔,文字等資源的方法,請在我的部落格中查找《 向安卓系統中添加圖檔,文字等資源》)
4.frameworks/base / packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBarPolicy.java
IntentFilter filter = new IntentFilter();
filter.addAction(AlarmManager.ACTION_NEXT_ALARM_CLOCK_CHANGED);
filter.addAction(AudioManager.RINGER_MODE_CHANGED_ACTION);
filter.addAction(AudioManager.INTERNAL_RINGER_MODE_CHANGED_ACTION);
filter.addAction(AudioManager.ACTION_HEADSET_PLUG);
filter.addAction(TelephonyIntents.ACTION_SIM_STATE_CHANGED);
filter.addAction(TelecomManager.ACTION_CURRENT_TTY_MODE_CHANGED);
filter.addAction(Intent.ACTION_MANAGED_PROFILE_AVAILABLE);
filter.addAction(Intent.ACTION_MANAGED_PROFILE_UNAVAILABLE);
filter.addAction(Intent.ACTION_MANAGED_PROFILE_REMOVED);
//mic mute
filter.addAction("android.intent.action.MIC_MUTE_BROADCAST");
filter.addAction("android.intent.action.MIC_NO_MUTE_BROADCAST");
mContext.registerReceiver(mIntentReceiver, filter, null, mHandler);
動态添加action 為android.Intent.action.MIC_MUTE_BORADCAST 的廣播。
5.在你需要控制的地方發送廣播
6.接收并處理廣播
private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (action.equals(AlarmManager.ACTION_NEXT_ALARM_CLOCK_CHANGED)) {
updateAlarm();
} else if (action.equals(AudioManager.RINGER_MODE_CHANGED_ACTION) ||
action.equals(AudioManager.INTERNAL_RINGER_MODE_CHANGED_ACTION)) {
updateVolumeZen();
} else if (action.equals(TelephonyIntents.ACTION_SIM_STATE_CHANGED)) {
updateSimState(intent);
} else if (action.equals(TelecomManager.ACTION_CURRENT_TTY_MODE_CHANGED)) {
updateTTY(intent);
} else if (action.equals(Intent.ACTION_MANAGED_PROFILE_AVAILABLE) ||
action.equals(Intent.ACTION_MANAGED_PROFILE_UNAVAILABLE) ||
action.equals(Intent.ACTION_MANAGED_PROFILE_REMOVED)) {
updateQuietState();
updateManagedProfile();
} else if (action.equals(AudioManager.ACTION_HEADSET_PLUG)) {
updateHeadsetPlug(intent);
}else if (action.equals("android.intent.action.MIC_MUTE_BROADCAST")){
//接收廣播并處理圖檔的顯示和消失
mIconController.setIconVisibility(mSlotMicMute, true);
}else if (action.equals("android.intent.action.MIC_NO_MUTE_BROADCAST")){
mIconController.setIconVisibility(mSlotMicMute, false);
}
}
};