重启Android后,如何确保用户选择的图像不会改变？

Question

我有一个简单的贴纸小部件,允许用户在放置小部件时选择其中一个贴纸.我的问题是,一旦设备重新启动,贴纸将恢复为默认设置.无论设备是否重新启动,如何确保用户选择的标签仍然存在？一个例子或推动正确的方向将是非常有帮助的.我不是在寻找任何人为我做这件事,只是为了接受如何去做这件事的教育.谢谢.

编辑 包含的代码

我不确定,但我认为我错了.我不知道如何以我现在拥有的方式合并SharedPreferences.有人能给我一个例子说明我应该如何使用至少一张我正在使用的图片吗？

public class SpraycanConfig extends Activity
{
int xawID;
AppWidgetManager xawm;
Context xc;
EditText xinfo;
//EasyTracker easyTracker;

protected void onCreate(Bundle paramBundle)
{
 super.onCreate(paramBundle);

 Crashlytics.start(this);

setContentView(R.layout.scconfiglayout);



  this.xc = this;
  Bundle localBundle = getIntent().getExtras();
  if (localBundle != null) {
  this.xawID = localBundle.getInt("appWidgetId", 0);
  }
  for (;;)
  {
    this.xawm = AppWidgetManager.getInstance(this.xc);
    ImageButton localImageButton1 = (ImageButton)findViewById(R.id.normal);
View.OnClickListener local1 = new View.OnClickListener()
{
  public void onClick(View paramAnonymousView)
  {
    RemoteViews localRemoteViews = new RemoteViews(xc.getPackageName(), R.layout.main);
    localRemoteViews.setImageViewResource(R.id.imageview, R.drawable.normal);
    xawm.updateAppWidget(xawID, localRemoteViews);
    Intent localIntent = new Intent();
    localIntent.putExtra("appWidgetId", xawID);
    setResult(-1, localIntent);
    finish();
  }
};
localImageButton1.setOnClickListener(local1);
ImageButton localImageButton2 = (ImageButton)findViewById(R.id.belton);
View.OnClickListener local2 = new View.OnClickListener()
{
  public void onClick(View paramAnonymousView)
  {
    RemoteViews localRemoteViews = new RemoteViews(xc.getPackageName(), R.layout.main);
    localRemoteViews.setImageViewResource(R.id.imageview, R.drawable.belton);
    xawm.updateAppWidget(xawID, localRemoteViews);
    Intent localIntent = new Intent();
    localIntent.putExtra("appWidgetId", xawID);
    setResult(-1, localIntent);
    finish();

  }
};
localImageButton2.setOnClickListener(local2);
ImageButton localImageButton3 = (ImageButton)findViewById(R.id.gold);
View.OnClickListener local3 = new View.OnClickListener()
{
  public void onClick(View paramAnonymousView)
  {
    RemoteViews localRemoteViews = new RemoteViews(xc.getPackageName(), R.layout.main);
    localRemoteViews.setImageViewResource(R.id.imageview, R.drawable.gold);
    xawm.updateAppWidget(xawID, localRemoteViews);
    Intent localIntent = new Intent();
    localIntent.putExtra("appWidgetId", xawID);
    setResult(-1, localIntent);
    finish();

  }
};
localImageButton3.setOnClickListener(local3);
ImageButton localImageButton4 = (ImageButton)findViewById(R.id.hardcore);
View.OnClickListener local4 = new View.OnClickListener()
{
  public void onClick(View paramAnonymousView)
  {
    RemoteViews localRemoteViews = new RemoteViews(xc.getPackageName(), R.layout.main);
    localRemoteViews.setImageViewResource(R.id.imageview, R.drawable.hardcore);
    xawm.updateAppWidget(xawID, localRemoteViews);
    Intent localIntent = new Intent();
    localIntent.putExtra("appWidgetId", xawID);
    setResult(-1, localIntent);
    finish();

  }
};
localImageButton4.setOnClickListener(local4);
ImageButton localImageButton5 = (ImageButton)findViewById(R.id.ironlak);
View.OnClickListener local5 = new View.OnClickListener()
{
  public void onClick(View paramAnonymousView)
  {
    RemoteViews localRemoteViews = new RemoteViews(xc.getPackageName(), R.layout.main);
    localRemoteViews.setImageViewResource(R.id.imageview, R.drawable.ironlak);
    xawm.updateAppWidget(xawID, localRemoteViews);
    Intent localIntent = new Intent();
    localIntent.putExtra("appWidgetId", xawID);
    setResult(-1, localIntent);
    finish();

  }
};
localImageButton5.setOnClickListener(local5);
ImageButton localImageButton6 = (ImageButton)findViewById(R.id.krylon);
View.OnClickListener local6 = new View.OnClickListener()
{
  public void onClick(View paramAnonymousView)
  {
    RemoteViews localRemoteViews = new RemoteViews(xc.getPackageName(), R.layout.main);
    localRemoteViews.setImageViewResource(R.id.imageview, R.drawable.krylon);
    xawm.updateAppWidget(xawID, localRemoteViews);
    Intent localIntent = new Intent();
    localIntent.putExtra("appWidgetId", xawID);
    setResult(-1, localIntent);
    finish();

  }
};
localImageButton6.setOnClickListener(local6);
ImageButton localImageButton7 = (ImageButton)findViewById(R.id.mtn94);
View.OnClickListener local7 = new View.OnClickListener()
{
  public void onClick(View paramAnonymousView)
  {
    RemoteViews localRemoteViews = new RemoteViews(xc.getPackageName(), R.layout.main);
    localRemoteViews.setImageViewResource(R.id.imageview, R.drawable.ninetyfour);
    xawm.updateAppWidget(xawID, localRemoteViews);
    Intent localIntent = new Intent();
    localIntent.putExtra("appWidgetId", xawID);
    setResult(-1, localIntent);
    finish();

  }
};
localImageButton7.setOnClickListener(local7);
ImageButton localImageButton8 = (ImageButton)findViewById(R.id.rusto);
View.OnClickListener local8 = new View.OnClickListener()
{
  public void onClick(View paramAnonymousView)
  {
    RemoteViews localRemoteViews = new RemoteViews(xc.getPackageName(), R.layout.main);
    localRemoteViews.setImageViewResource(R.id.imageview, R.drawable.rusto);
    xawm.updateAppWidget(xawID, localRemoteViews);
    Intent localIntent = new Intent();
    localIntent.putExtra("appWidgetId", xawID);
    setResult(-1, localIntent);
    finish();

  }
};
localImageButton8.setOnClickListener(local8);

return;

  }

 }

@Override
protected void onStart() {
    super.onStart();

}

@Override
protected void onStop() {
    super.onStop();

 }



}

Answer 1

正是这样：

protected void onCreate(Bundle paramBundle)
{
    super.onCreate(paramBundle);
    SharedPreferences sharedPreferences = getSharedPreferences("myPref", 0);

    // get the last chosen sticker
    int sticker = sharedPreferences.getInt("chosenSticker", R.drawable.normal);  //the .normal is the default value in case the user didn't choose one.
    myView.setImageViewResource(R.id.imageview, sticker);  //now you can use it


    // store user's choice for example:
    View.OnClickListener local2 = new View.OnClickListener()
    {
        public void onClick(View paramAnonymousView)
        {
            SharedPreferences.Editor editor = sharedPreferences.edit();
            editor.putInt("chosenSticker", R.drawable.belton);
            editor.apply();

            // your rest of your code here ...
        }
    }
}