网站首页图片轮播,宁海县建设局网站,做网站是先做后台还是前端,网络服务列表在哪里基于Android11增加一个蓝牙开关按钮然后控制蓝牙开关
首先控制蓝牙开关的逻辑很简单#xff0c;bluetoothAdapter.disable();就可以关闭。这里需要用到android.bluetooth.BluetoothAdapter;
1.找到蓝牙界面的xml文件加个按钮
--- a/packages/apps/Settings/res/xml/connect…基于Android11增加一个蓝牙开关按钮然后控制蓝牙开关
首先控制蓝牙开关的逻辑很简单bluetoothAdapter.disable();就可以关闭。这里需要用到android.bluetooth.BluetoothAdapter;
1.找到蓝牙界面的xml文件加个按钮
--- a/packages/apps/Settings/res/xml/connected_devices.xmlb/packages/apps/Settings/res/xml/connected_devices.xml-20,6 20,11 android:keyconnected_devices_screenandroid:titlestring/connected_devices_dashboard_title SwitchPreferenceandroid:keytoggle_bluetoothandroid:titlestring/bluetooth_switch_titleandroid:summarystring/bluetooth_switch_summary/com.android.settings.slices.SlicePreferenceandroid:keybt_nearby_sliceandroid:titlestring/summary_placeholder
2. 在Fragment.java里面添加控制逻辑
这里我曾经尝试写新的controller去控制最后没成功然后又催的比较急。就粗暴一点直接写在Fragment里面了。
--- a/packages/apps/Settings/src/com/android/settings/connecteddevice/ConnectedDeviceDashboardFragment.javab/packages/apps/Settings/src/com/android/settings/connecteddevice/ConnectedDeviceDashboardFragment.java-28,6 28,11 import com.android.settings.dashboard.DashboardFragment;import com.android.settings.search.BaseSearchIndexProvider;import com.android.settings.slices.SlicePreferenceController;import com.android.settingslib.search.SearchIndexable;
import androidx.preference.SwitchPreferenceCompat;
import androidx.preference.SwitchPreference;
import androidx.preference.Preference;
import android.bluetooth.BluetoothAdapter;
import android.os.Bundle;SearchIndexable(forTarget SearchIndexable.ALL ~SearchIndexable.ARC)public class ConnectedDeviceDashboardFragment extends DashboardFragment {-38,6 43,7 public class ConnectedDeviceDashboardFragment extends DashboardFragment {static final String KEY_CONNECTED_DEVICES connected_device_list;VisibleForTestingstatic final String KEY_AVAILABLE_DEVICES available_device_list;static final String KEY_TOGGLE_BLUETOOTH toggle_bluetooth;Overridepublic int getMetricsCategory() {-77,6 83,37 public class ConnectedDeviceDashboardFragment extends DashboardFragment {: null);} Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);SwitchPreference bluetoothSwitch findPreference(KEY_TOGGLE_BLUETOOTH);BluetoothAdapter bluetoothAdapter BluetoothAdapter.getDefaultAdapter();if (bluetoothSwitch ! null) {bluetoothSwitch.setChecked(bluetoothAdapter.isEnabled());bluetoothSwitch.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {Overridepublic boolean onPreferenceChange(Preference preference, Object newValue) {boolean isChecked (Boolean) newValue;BluetoothAdapter bluetoothAdapter BluetoothAdapter.getDefaultAdapter();if (bluetoothAdapter ! null) {if (isChecked) {if (!bluetoothAdapter.isEnabled()) {bluetoothAdapter.enable();}} else {if (bluetoothAdapter.isEnabled()) {bluetoothAdapter.disable();}}}return true;}});}}一开始是写在里面自带的一个onAttach函数里面但是发现没效果可能是正因为函数执行的时候界面还为加载完毕所以没有获取到里面的元素。所以我自己重写了onCreate方法写在这里面。
