我試圖將數據備份實施到我的應用程序中。我構建Android 2.2項目,並在Galaxy s2 4.0.3中運行。BackupAgentHelper從未在Android 2.2中調用
我嘗試使用:BackupManagerTest喜好保存到雲
這是我的代碼:
AndroidManifest.xml中
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="net.amdroid.backuptest"
android:versionCode="1"
android:versionName="1.0" >
<uses-permission android:name="android.permission.INTERNET" />
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="8" />
<application
android:allowBackup="true"
android:backupAgent="net.amdroid.backuptest.MyBackupAgent"
android:icon="@drawable/icon"
android:label="@string/app_name" >
<activity
android:name=".BackupManagerTestActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<meta-data
android:name="com.google.android.backup.api_key"
android:value="AEdPqrEAAAAI7_yf1xqlpltWZPZiKMHVlDgn3nMfgotjUweSUg" />
</application>
</manifest>
MyBackupAgent.java
public class MyBackupAgent extends BackupAgentHelper {
// The names of the SharedPreferences groups that the application maintains. These
// are the same strings that are passed to getSharedPreferences(String, int).
static final String PREFS_TEST = "testprefs";
// An arbitrary string used within the BackupAgentHelper implementation to
// identify the SharedPreferenceBackupHelper's data.
static final String MY_PREFS_BACKUP_KEY = "myprefs";
// Simply allocate a helper and install it
@Override
public void onCreate() {
SharedPreferencesBackupHelper helper =
new SharedPreferencesBackupHelper(this, PREFS_TEST);
addHelper(MY_PREFS_BACKUP_KEY, helper);
Log.d("Test", "Adding backupagent...");
}
}
我活動
public class BackupManagerTestActivity extends Activity {
private SharedPreferences prefs;
private Editor edit;
private BackupManager backupManager;
private EditText text;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
backupManager = new BackupManager(getBaseContext());
prefs = getSharedPreferences(MyBackupAgent.PREFS_TEST, Context.MODE_PRIVATE);
edit = prefs.edit();
text = (EditText) findViewById(R.id.editName);
String nome = prefs.getString("KEY_NAME", "");
text.setText(nome);
Button button = (Button) findViewById(R.id.buttonSave);
button.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
edit.putString("KEY_NAME", text.getText().toString());
edit.commit();
Log.d("Test", "Calling backup...");
backupManager.dataChanged();
}
});
}
}
因此MyBackupAgent
從來沒有叫過。我不知道原因。
一些身體幫我 – 2012-08-05 17:47:46
PLZ如果你告訴我找到答案? – abh22ishek 2015-04-10 18:06:54