Data deleted after update

Question

I have published a new update for my app but when I upgrade it from Play Store I have seen that application data were deleted. Why? Thanks

My Manifest:

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:roundIcon="@mipmap/ic_launcher_round"
    android:supportsRtl="true"
    android:theme="@style/AppTheme">
    <activity
        android:name=".MainActivity"
        android:label="@string/app_name"
        android:theme="@style/AppTheme.NoActionBar"
        android:screenOrientation="portrait">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

Does your app use sqlite or are you talking about simple application data? — Nicola Gallazzi, Sep 18 '18 at 10:23
Simple application data, I save some data into .dat files (in the /data/data/package/files) — Alessandro Marino, Sep 18 '18 at 10:26
@ShaifaliRajput I have edited the question and added manifest file — Alessandro Marino, Sep 18 '18 at 11:05

score 1 · Answer 1 · answered Sep 18 '18 at 10:44

1

If you are using Sqlite and in code you drop table in onUpgrade this may occur!

@Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {

      db.execSQL("DROP TABLE IF EXISTS '" + DATABASE_TABLE + "'");

}

answered Sep 18 '18 at 10:44

Intsab Haider

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Thank you for reply, but I don't use SqlLite . I only save dummy string into a .dat file – Alessandro Marino Sep 18 '18 at 10:45

Data deleted after update

1 Answers1