android 蓝牙连接图标不见了 Android P系统默认蓝牙状态栏不显示图标

在Android P版本，状态栏上的蓝牙图标只有在连接蓝牙耳机或者蓝牙网络时才会显示，目前客户要求，只要打开蓝牙功能就必须显示蓝牙图标

修改如下：

文件路径(MTK平台)

/vendor/mediatek/proprietary/packages/apps/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBarPolicy.java

private final void updateBluetooth() {

int iconId = R.drawable.stat_sys_data_bluetooth;

String contentDescription =

mContext.getString(R.string.accessibility_quick_settings_bluetooth_on);

boolean bluetoothVisible = false;

if (mBluetooth != null) {

//wei modify for bluetooth start

if(mBluetooth.isBluetoothEnabled()) {

bluetoothVisible = mBluetooth.isBluetoothEnabled();

if (mBluetooth.isBluetoothConnected()) {

iconId = R.drawable.stat_sys_data_bluetooth;

contentDescription = mContext.getString(R.string.accessibility_bluetooth_connected);

bluetoothVisible = mBluetooth.isBluetoothEnabled();

}

}

//wei modify for bluetooth start

}

mIconController.setIcon(mSlotBluetooth, iconId, contentDescription);

mIconController.setIconVisibility(mSlotBluetooth, bluetoothVisible);

}

主要是在蓝牙打开状态将bluetoothVisible = mBluetooth.isBluetoothEnabled();重新赋值一下即可