添加key值
/**
* Control navigation bar enabled
*/
@Readable
@SuppressLint("NoSettingsProvider")
public static final String NAVIGATIONBAR_ENABLED = "navigationbar_enabled";
/**
* Supoort panel bar expand
*/
@Readable
@SuppressLint("NoSettingsProvider")
public static final String SUPPORT_PANELBAR_EXPAND = "support_panelbar_expand";
Setting中添加相关设置项
<SwitchPreference
android:key="navigationbar_enabled"
android:title="@string/navigationbar_enabled_title"
settings:controller="com.android.settings.display.NavigationbarPreferenceController"/>
<SwitchPreference
android:key="support_panelbar_expand"
android:title="@string/support_panelbar_expand_title"
settings:controller="com.android.settings.display.SupportPanelbarExpandPreferenceController"/>
<string name="navigationbar_enabled_title">Show navigation bar</string>
<string name="support_panelbar_expand_title">Allows status bar drop-down</string>
package com.android.settings.display;
import android.content.Context;
import android.text.TextUtils;
import androidx.preference.Preference;
import com.android.settings.core.TogglePreferenceController;
import com.android.settingslib.core.instrumentation.MetricsFeatureProvider;
import android.provider.Settings;
public class NavigationbarPreferenceController extends TogglePreferenceController implements
Preference.OnPreferenceChangeListener {
private static final String KEY_NAVIGATIONBAR = "navigationbar_enabled";
private Context mContext;
private Preference mPreference;
public NavigationbarPreferenceController(Context context) {
super(context, KEY_NAVIGATIONBAR);
mContext = context;
}
@Override
public String getPreferenceKey() {
return KEY_NAVIGATIONBAR;
}
@Override
public void updateState(Preference preference) {
mPreference = preference;
super.updateState(preference);
}
@Override
public int getAvailabilityStatus() {
return AVAILABLE/* : UNSUPPORTED_ON_DEVICE*/;
}
@Override
public boolean isChecked() {
int status = Settings.System.getInt(mContext.getContentResolver(), Settings.System.NAVIGATIONBAR_ENABLED, 0);
return status==1;
}
@Override
public boolean setChecked(boolean isChecked) {
Settings.System.putInt(mContext.getContentResolver(),
Settings.System.NAVIGATIONBAR_ENABLED, isChecked ? 1:0);
return true;
}
}
在屏幕顶部和中间下滑都可以拉出状态栏,所以有两个地方需要修改。你也可以直接在CommandQueue.java的panelsEnabled()方法中做控制
@Override
public boolean onTouchEvent(MotionEvent event) {
// add start
int supportExpand = Settings.System.getInt(
mContext.getContentResolver(), Settings.System.SUPPORT_PANELBAR_EXPAND, 0);
if (supportExpand == 0){
return true;
}
// end
boolean barConsumedEvent = mBar.interceptTouchEvent(event);
if (DEBUG_GESTURES) {
if (event.getActionMasked() != MotionEvent.ACTION_MOVE) {
EventLog.writeEvent(EventLogTags.SYSUI_PANELBAR_TOUCH,
event.getActionMasked(), (int) event.getX(), (int) event.getY(),
barConsumedEvent ? 1 : 0);
}
}
return barConsumedEvent || super.onTouchEvent(event);
}
private void dispatchTouchEvent(MotionEvent ev) {
// add start
int supportExpand = Settings.System.getInt(
mLauncher.getContentResolver(), Settings.System.SUPPORT_PANELBAR_EXPAND, 0);
if (mSystemUiProxy.isActive() && supportExpand==1) {
// add end
mLastAction = ev.getActionMasked();
mSystemUiProxy.onStatusBarMotionEvent(ev);
}
}
导航栏显示的控制
// add start
import android.content.ContentResolver;
import android.database.ContentObserver;
import android.provider.Settings;
// end
...
// add start
private final Object mLock = new Object();
private SettingsObserver mSettingsObserver;
private boolean mSupportPanelExpand;
private boolean mShowNavigationbar;
// end
...
// add start
private final class SettingsObserver extends ContentObserver {
public SettingsObserver(Handler handler) {
super(handler);
}
@Override
public void onChange(boolean selfChange, Uri uri) {
synchronized (mLock) {
updateSettingsLocked();
if (mShowNavigationbar){
createNavigationBar(null);
} else {
removeNavigationBar();
}
}
}
}
private void updateSettingsLocked() {
final ContentResolver resolver = mContext.getContentResolver();
mShowNavigationbar = (Settings.System.getInt(resolver,
Settings.System.NAVIGATIONBAR_ENABLED, 0)) == 1;
}
// add end
// ================================================================================
// Constructing the view
// ================================================================================
protected void makeStatusBarView(@Nullable RegisterStatusBarResult result) {
final Context context = mContext;
updateDisplaySize(); // populates mDisplayMetrics
updateResources();
updateTheme();
...
// add start
// Register for settings changes.
mSettingsObserver = new SettingsObserver(mHandler);
final ContentResolver resolver = mContext.getContentResolver();
resolver.registerContentObserver(Settings.System.getUriFor(
Settings.System.NAVIGATIONBAR_ENABLED),
false, mSettingsObserver);
updateSettingsLocked();
if (mShowNavigationbar){
createNavigationBar(result);
}
// add end
}
...
protected void createNavigationBar(@Nullable RegisterStatusBarResult result) {
mNavigationBarController.createNavigationBars(true /* includeDefaultDisplay */, result);
}
// add start
protected void removeNavigationBar() {
mNavigationBarController.removeNavigationBar();
}
// add end
// add start
public void removeNavigationBar() {
Display[] displays = mDisplayManager.getDisplays();
for (Display display : displays) {
removeNavigationBar(display.getDisplayId());
}
}
// add end
配置默认值
private void loadSystemSettings(SQLiteDatabase db) {
SQLiteStatement stmt = null;
try {
stmt = db.compileStatement("INSERT OR IGNORE INTO system(name,value)"
+ " VALUES(?,?);");
loadBooleanSetting(stmt, Settings.System.DIM_SCREEN,
R.bool.def_dim_screen);
loadIntegerSetting(stmt, Settings.System.SCREEN_OFF_TIMEOUT,
R.integer.def_screen_off_timeout);
// add start
loadBooleanSetting(stmt, Settings.System.NAVIGATIONBAR_ENABLED,
R.bool.def_navigationbar_enabled);
loadBooleanSetting(stmt, Settings.System.SUPPORT_PANELBAR_EXPAND,
R.bool.def_support_panelbar_expand);
// end
...
}
// add start
<bool name="def_navigationbar_enabled">false</bool>
<bool name="def_support_panelbar_expand">false</bool>
// end