Android7.0 Settings主選單新增一條item
阿新 • • 發佈:2019-01-08
往Android7.0的settings的主選單裡新增一條item. N與M的Settings不同,在M上只要找到Settings裡面的相應的佈局新增就好,但在N上由於Setting裡面的item不再受佈局控制,所以得在程式碼中新增.
找到/packages/apps/Settings/src/com/android/settings/SettingsActivity.java
在settingsActivity.java裡面的private void doUpdateTilesList() {}新增程式碼才會顯示在Settings的item裡面,具體如下:
private void doUpdateTilesList () {
//add start
setTileEnabled(new ComponentName(packageName,
Settings.WtkSecurityLockersActivity.class.getName()),getResources().getBoolean(R.bool.show_security_lock), isAdmin, pm);
//add end
}
這裡添加了這段程式碼之後就可以顯示在settings的item裡面了,具體還有以下的一些完善:在SettingsActivity.java裡面的
private String[] SETTINGS_FOR_RESTRICTED = {
//add start
Settings.WtkSecurityLockersActivity.class.getName(),
//add end
};
private static final String[] ENTRY_FRAGMENTS = {
//add start
WtkSecurityLockers.class.getName(),
//add end
};
packages/apps/Settings/src/com/android/settings/Settings.java裡面加
public static class WtkSecurityLockersActivity extends SettingsActivity { /* empty */ }
packages/apps/Settings/AndroidManifest.xml裡面加:
<!--add (start)-->
<!-- A: WtkSecurityLockers Settings -->
<activity android:name="Settings$WtkSecurityLockersActivity"
android:label="@string/security_locker"
android:icon="@drawable/ic_wtk_securitylocker">
<intent-filter android:priority="4">
<action android:name="com.android.settings.action.SETTINGS" />
</intent-filter>
<meta-data android:name="com.android.settings.category"
android:value="com.android.settings.category.system" />
<meta-data android:name="com.android.settings.FRAGMENT_CLASS"
android:value="com.android.settings.WtkSecurityLockers" />
<meta-data android:name="com.android.settings.title"
android:resource="@string/security_locker" />
<meta-data android:name="com.android.settings.icon"
android:resource="@drawable/ic_wtk_securitylocker" />
</activity>
<!-- A: WtkSecurityLockers Settings -->
<!--add (end)-->
packages/apps/Settings/src/com/android/settings/下面新增一個類:
package com.android.settings;
import com.android.settings.R;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.preference.Preference;
import android.support.v7.preference.PreferenceScreen;
import android.support.v14.preference.SwitchPreference;
import android.util.Log;
import android.os.SystemProperties;
import android.provider.Settings;
import com.android.internal.logging.MetricsProto.MetricsEvent;
public class WtkSecurityLockers extends SettingsPreferenceFragment
implements Preference.OnPreferenceChangeListener, Preference.OnPreferenceClickListener{
private static final String KEY_SECURITY_LOCKER = "security_lockers";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.e("lcg","KEY_SECURITY_LOCKER = "+KEY_SECURITY_LOCKER);
Intent intent = new Intent().setClassName("com.wtk.wtksecuritylocker", "com.wtk.wtksecuritylocker.LockerListActivity");
intent.putExtra(KEY_SECURITY_LOCKER,true);
startActivity(intent);
getActivity().finish();
}
@Override
public void onResume() {
super.onResume();
}
@Override
public boolean onPreferenceClick(Preference preference) {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean onPreferenceChange(Preference preference, Object newValue) {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean onPreferenceTreeClick(Preference preference) {
// TODO Auto-generated method stub
return super.onPreferenceTreeClick(preference);
}
@Override
protected int getMetricsCategory() {
// TODO Auto-generated method stub
return MetricsEvent.DEVICEINFO_STORAGE;
}
}
至此就可以在Settings裡面的主選單介面新增一個item,點選該item就會進入我們想進的介面.
附上:packages/apps/Settings/src/com/android/settings/SettingsActivity.java
private void setTileEnabled(ComponentName component, boolean enabled, boolean isAdmin,
PackageManager pm) {
if (UserHandle.MU_ENABLED && !isAdmin && getPackageName().equals(component.getPackageName())
&& !ArrayUtils.contains(SETTINGS_FOR_RESTRICTED, component.getClassName())) {
enabled = false;
}
setTileEnabled(component, enabled);
}
frameworks\base\packages\SettingsLib\src\com\android\settingslib\drawer\SettingsDrawerActivity.java裡面
public void setTileEnabled(ComponentName component, boolean enabled) {
PackageManager pm = getPackageManager();
int state = pm.getComponentEnabledSetting(component);
boolean isEnabled = state == PackageManager.COMPONENT_ENABLED_STATE_ENABLED;
if (isEnabled != enabled || state == PackageManager.COMPONENT_ENABLED_STATE_DEFAULT) {
if (enabled) {
sTileBlacklist.remove(component);
} else {
sTileBlacklist.add(component);
}
pm.setComponentEnabledSetting(component, enabled
? PackageManager.COMPONENT_ENABLED_STATE_ENABLED
: PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
PackageManager.DONT_KILL_APP);
new CategoriesUpdater().execute();
}
}
由此可見往Android7.0的Settingsk裡新增item不需要佈局,至於為什麼,還有待繼續研究.