android.app.ActivityManagerNative#getDefault ( )源码实例Demo

public void setRunAsMonkey(boolean isSet) {
	IActivityManager am = ActivityManagerNative.getDefault();
	if (am == null) {
		throw new RuntimeException(
				"Can't manage monkey status; is the system running?");
	}
	try {
		if (isSet) {
			am.setActivityController(new DummyActivityController());
		} else {
			am.setActivityController(null);
		}
	} catch (RemoteException e) {
		throw new RuntimeException(e);
	}
}
 

public void initialize(ShellUiAutomatorBridge uiAutomatorBridge) {
	mUiAutomationBridge = uiAutomatorBridge;
	// 监听activity变化，用于getAct
	try {
		IActivityManager am = ActivityManagerNative.getDefault();
		am.setActivityController(new DummyActivityController());
	} catch (RemoteException e) {
	}
	UiAutomation uiAutomation = uiAutomatorBridge.getUiAutomation();
	uiAutomation
			.setOnAccessibilityEventListener(new OnAccessibilityEventListener() {
				public void onAccessibilityEvent(AccessibilityEvent event) {
					synchronized (onAccessibilityEventListeners) {
						for (OnAccessibilityEventListener listener : onAccessibilityEventListeners) {
							listener.onAccessibilityEvent(event);
						}
					}
				}
			});
}
 

/**
 * Evicts a user's CE key by stopping and restarting the user.
 *
 * The key is evicted automatically by the user controller when the user has stopped.
 */
@Override
public void evictCredentialEncryptionKey(@UserIdInt int userId) {
    checkManageUsersPermission("evict CE key");
    final IActivityManager am = ActivityManagerNative.getDefault();
    final long identity = Binder.clearCallingIdentity();
    try {
        am.restartUserInBackground(userId);
    } catch (RemoteException re) {
        throw re.rethrowAsRuntimeException();
    } finally {
        Binder.restoreCallingIdentity(identity);
    }
}
 

public long getSystemLongPressTime() {
	long longPressTimeout = 2000;
	try {
		IContentProvider provider = null;
		Cursor cursor = null;
		IActivityManager activityManager = ActivityManagerNative
				.getDefault();
		String providerName = Settings.Secure.CONTENT_URI.getAuthority();
		IBinder token = new Binder();
		try {
			ContentProviderHolder holder = activityManager
					.getContentProviderExternal(providerName,
							UserHandle.USER_OWNER, token);
			if (holder == null) {
				throw new IllegalStateException("Could not find provider: "
						+ providerName);
			}
			provider = holder.provider;
			cursor = provider.query(null, Settings.Secure.CONTENT_URI,
					new String[] { Settings.Secure.VALUE }, "name=?",
					new String[] { Settings.Secure.LONG_PRESS_TIMEOUT },
					null, null);
			if (cursor.moveToFirst()) {
				longPressTimeout = cursor.getInt(0);
			}
		} finally {
			if (cursor != null) {
				cursor.close();
			}
			if (provider != null) {
				activityManager.removeContentProviderExternal(providerName,
						token);
			}
		}
	} catch (Throwable e) {
	}
	return longPressTimeout;
}
 

/**
 * Sets the locale specified. Input data is the byte representation of a
 * BCP-47 language tag. For backwards compatibility, strings of the form
 * {@code ll_CC} are also accepted, where {@code ll} is a two letter language
 * code and {@code CC} is a two letter country code.
 *
 * @param data the locale string in bytes.
 */
void setLocaleData(byte[] data, int size) {
    // Check if locale was set by the user:
    Configuration conf = mContext.getResources().getConfiguration();
    // TODO: The following is not working as intended because the network is forcing a locale
    // change after registering. Need to find some other way to detect if the user manually
    // changed the locale
    if (conf.userSetLocale) return; // Don't change if user set it in the SetupWizard

    final String[] availableLocales = mContext.getAssets().getLocales();
    // Replace "_" with "-" to deal with older backups.
    String localeCode = new String(data, 0, size).replace('_', '-');
    Locale loc = null;
    for (int i = 0; i < availableLocales.length; i++) {
        if (availableLocales[i].equals(localeCode)) {
            loc = Locale.forLanguageTag(localeCode);
            break;
        }
    }
    if (loc == null) return; // Couldn't find the saved locale in this version of the software

    try {
        IActivityManager am = ActivityManagerNative.getDefault();
        Configuration config = am.getConfiguration();
        config.locale = loc;
        // indicate this isn't some passing default - the user wants this remembered
        config.userSetLocale = true;

        am.updateConfiguration(config);
    } catch (RemoteException e) {
        // Intentionally left blank
    }
}
 

public static IActivityManager getAMN() {
    return ActivityManagerNative.getDefault();
}
 

@Override
protected Object getActivityManager() {
  Log.i(TAG, "Invoking ActivityManagerNative.getDefault");
  return ActivityManagerNative.getDefault();
}