Android Q - Settings页面添加二级选项_感觉不怎么会的博客-CSDN博客
本次修改基本同上一篇文章，在一级菜单中的最后添加 OTG 选项，简单记录下。
文件清单，依旧位于 packages/apps/Settings ：
- res/xml/top_level_settings.xml
- res/xml/otg_settings.xml
- src/com/android/settings/otg/OTGPreferenceController.java
- src/com/android/settings/otg/OTGSettingFragment.java
- src/com/android/settings/otg/TopLevelOTGPreferenceController.java
下面简单说明。
1、修改布局文件路径：res/xml/top_level_settings.xml
说明：这个文件就是打开 Settings 应用的首页
...
路径：res/xml/otg_settings.xml
说明：进入 OTG 菜单后的布局文件，领导只说需要一个开关选项，功能实现可仿照上一篇文章实现。
2、功能实现
路径：src/com/android/settings/otg/TopLevelOTGPreferenceController.java
说明：菜单选项
package com.android.settings.otg;
import android.content.Context;
import android.provider.Settings;
import com.android.settings.R;
import com.android.settings.core.BasePreferenceController;
public class TopLevelOTGPreferenceController extends BasePreferenceController {
public TopLevelOTGPreferenceController(Context context, String preferenceKey) {
super(context, preferenceKey);
}
@Override
public int getAvailabilityStatus() {
return AVAILABLE;
}
@Override
public CharSequence getSummary() {
return mContext.getString(R.string.settings_otg_text);
}
}
路径：src/com/android/settings/otg/OTGSettingFragment.java
说明：这个就是点击一级菜单后进入的页面，加载二级页面。（有的参数不太清楚怎么添加，清楚之后再更新）
package com.android.settings.otg;
import static com.android.settings.network.MobilePlanPreferenceController.MANAGE_MOBILE_PLAN_DIALOG_ID;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.settings.SettingsEnums;
import android.content.Context;
import android.os.Bundle;
import android.provider.SearchIndexableResource;
import android.util.Log;
import androidx.fragment.app.Fragment;
import androidx.preference.Preference;
import androidx.preference.PreferenceScreen;
import com.android.settings.R;
import com.android.settings.core.FeatureFlags;
import com.android.settings.dashboard.DashboardFragment;
import com.android.settings.development.featureflags.FeatureFlagPersistent;
import com.android.settings.network.MobilePlanPreferenceController.MobilePlanPreferenceHost;
import com.android.settings.search.BaseSearchIndexProvider;
import com.android.settings.wifi.WifiMasterSwitchPreferenceController;
import com.android.settingslib.core.AbstractPreferenceController;
import com.android.settingslib.core.instrumentation.MetricsFeatureProvider;
import com.android.settingslib.core.lifecycle.Lifecycle;
import com.android.settingslib.search.SearchIndexable;
import com.android.settings.deviceinfo.BuildNumberPreferenceController;
import com.android.settings.otg.OTGPreferenceController;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
@SearchIndexable
public class OTGSettingFragment extends DashboardFragment {
private static final String TAG = "OTGDashboardFrag";
public static final String ARG_SHOW_EXPAND_BUTTON = "showExpandButton";
public static final String EXTRA_SHOW_AWARE_DISABLED = "show_aware_dialog_disabled";
private static final int COUNT_INVALID = -1;
private Fragment mFragment;
private AlertDialog mMobilePlanDialog;
private int mChildrenCount = COUNT_INVALID;
@Override
public int getMetricsCategory() {
//应该是这种格式的 SettingsEnums.SETTINGS_NETWORK_CATEGORY;
//但是我不知道如何添加，暂时默认这个数值吧～
return 9232;
}
@Override
protected String getLogTag() {
return TAG;
}
@Override
protected int getPreferenceScreenResId() {
return R.xml.otg_settings;
}
@Override
public void onAttach(Context context) {
super.onAttach(context);
Bundle args = getArguments();
if (args != null) {
if (!args.getBoolean(ARG_SHOW_EXPAND_BUTTON, true)) {
mChildrenCount = Integer.MAX_VALUE;
}
}
use(OTGPreferenceController.class).setFragment(this);
}
@Override
protected List createPreferenceControllers(Context context) {
return buildPreferenceControllers(context, getSettingsLifecycle(),
this );
}
private static List buildPreferenceControllers(Context context,
Lifecycle lifecycle, Fragment fragment) {
final List controllers = new ArrayList<>();
return controllers;
}
}
路径：src/com/android/settings/otg/OTGPreferenceController.java
说明：这个基本同上一篇文章中的以太网开关控制一样，甚至比之前写的更少。
package com.android.settings.otg;
import android.os.Bundle;
import android.content.Context;
import android.content.pm.PackageManager;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.text.TextUtils;
import android.util.Log;
import androidx.fragment.app.Fragment;
import androidx.preference.Preference;
import androidx.preference.PreferenceManager;
import androidx.preference.PreferenceScreen;
import androidx.preference.SwitchPreference;
import com.android.settings.R;
import com.android.settings.core.TogglePreferenceController;
import com.android.settings.dashboard.DashboardFragment;
import com.android.settings.utils.ThreadPool;
import com.android.settings.utils.ReflectUtil;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
public class OTGPreferenceController extends TogglePreferenceController {
private static final String TAG = "OTGPreferenceController";
public OTGPreferenceController(Context context, String key) {
super(context, key);
}
private Fragment mFragment;
private SwitchPreference mOTGPreference;
private SharedPreferences mSharedPreference;
@Override
public boolean handlePreferenceTreeClick(Preference preference) {
android.util.Log.d(TAG, "handlePreferenceTreeClick: 測試" + preference.getKey());
changeState(!isChecked());
return false;
}
@Override
@AvailabilityStatus
public int getAvailabilityStatus() {
return AVAILABLE;
}
@Override
public void displayPreference(PreferenceScreen screen) {
super.displayPreference(screen);
android.util.Log.d(TAG, "displayPreference: " );
if (isAvailable()) {
mOTGPreference = screen.findPreference(getPreferenceKey());
if (isChecked())
mOTGPreference.setSummary(mContext.getString(R.string.settings_eth_open));
else
mOTGPreference.setSummary(mContext.getString(R.string.settings_eth_close));
mOTGPreference.setChecked(isChecked());
}
}
public void init(DashboardFragment fragment) {
final Context context = fragment.getContext();
}
public void setFragment(Fragment hostFragment) {
mFragment = hostFragment;
}
@Override
public boolean setChecked(boolean isChecked) {
android.util.Log.d(TAG, "setChecked: " + isChecked);
return false;
}
public void changeState(boolean state) {
android.util.Log.d(TAG, "changeState to be = " + state);
if (state) {
mOTGPreference.setSummary(mContext.getString(R.string.settings_eth_open));
mOTGPreference.setChecked(true);
ReflectUtil.setProperty("persist.flyscale.otg", "1");
} else {
mOTGPreference.setSummary(mContext.getString(R.string.settings_eth_close));
mOTGPreference.setChecked(false);
ReflectUtil.setProperty("persist.flyscale.otg", "0");
}
android.util.Log.d(TAG, "changeState: currentState is = " + isChecked());
}
@Override
public boolean isChecked() {
return TextUtils.equals(ReflectUtil.getProperty("persist.flyscale.otg", "0"), "1");
}
}
