Android 关于访问SharedReference的另一个应用程序

我需要访问另一个应用程序的SharedReference，必须设置SharedReference

MODE_WORLD_WRITEABLE | MODE_WORLD_READABLE，并显示Logcat

03-23 13:54:45.038: E/ApplicationContext(10895): Couldn't rename file /data/data/com.mzw.gamehelper/shared_prefs/public.xml to backup file /data/data/com.mzw.gamehelper/shared_prefs/public.xml.bak

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我不知道有什么问题，谁能帮我，谢谢。

试试这段代码插入值

 private SharedPreferences myPrefs;
    myPrefs = Actionactivity.this.getSharedPreferences("myPrefs", MODE_WORLD_WRITEABLE);
    SharedPreferences.Editor prefsEditor = myPrefs.edit();
    prefsEditor.putString("Mobile_no", getText_no.getText().toString().trim());
    prefsEditor.commit();

并尝试此代码获取值

myPrefs = this.getSharedPreferences("myPrefs", MODE_WORLD_READABLE);
myPrefs.getString("Mobile_no", "");

试着这样做：

Context otherAppsContext = null;
private SharedPreferences sharedPreferences;
public static final String PREFS_READ = "PREFS_READ";
public static final String KEY_READ = "KEY_READ";
try {
  //com.dfdf.fdfdf.android.sharedpreferences OTHER APPLICTION PACKAGE NAME
       otherAppsContext = createPackageContext("com.dfdf.fdfdf.android.sharedpreferences", 0);
    } catch (NameNotFoundException e) {
    }
 sharedPreferences = otherAppsContext.getSharedPreferences(PREFS_READ, Context.MODE_WORLD_WRITEABLE);
 String strvalue=sharedPreferences.getString(KEY_READ, "WORLD READ EMPTY")

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我可以获取值，这没问题，但无法更改值，抛出异常。mContext=this.createPackageContextpackName，Context.Context\u IGNORE\u SECURITY；SharedReferences spf2=mContext.getSharedReferencesPublic，模式为“可写”模式为“可读”；编辑器编辑器=spf2.edit；editor.putBooleanpreview，true；editor.putinoverlay_尺寸，100；editor.commit；