要将SharedPreferences数据与apk一起上传到Play商店,可以使用以下解决方法:
public class SharedPreferencesHelper {
private static final String PREFS_NAME = "MyPrefs";
public static void saveData(Context context, String key, String value) {
SharedPreferences sharedPreferences = context.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putString(key, value);
editor.apply();
}
public static String getData(Context context, String key) {
SharedPreferences sharedPreferences = context.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
return sharedPreferences.getString(key, "");
}
}
// 保存数据
SharedPreferencesHelper.saveData(context, "key", "value");
// 读取数据
String data = SharedPreferencesHelper.getData(context, "key");
private void backupSharedPreferences(Context context) {
try {
File inputFile = new File(context.getFilesDir().getParent() + "/shared_prefs/" + SharedPreferencesHelper.PREFS_NAME + ".xml");
FileInputStream fis = new FileInputStream(inputFile);
File outputFile = new File(Environment.getExternalStorageDirectory() + "/shared_prefs/" + SharedPreferencesHelper.PREFS_NAME + ".xml");
FileOutputStream fos = new FileOutputStream(outputFile);
byte[] buffer = new byte[1024];
int length;
while ((length = fis.read(buffer)) > 0) {
fos.write(buffer, 0, length);
}
fis.close();
fos.close();
} catch (Exception e) {
e.printStackTrace();
}
}
这样,当用户下载并安装你的应用程序时,备份的SharedPreferences数据也会被还原到设备上。