我创建了一个小部件,它显示一个简单的文本视图,可以在配置活动中作为 Edittext 进行编辑。我使用共享首选项保存输入的文本,因此用户可以点击小部件来编辑文本,并且已经输入的文本出现在编辑文本字段中。我的问题是这个。我希望用户能够添加多个小部件,但是当添加第二个小部件时,会从共享首选项中加载与另一个小部件中相同的文本。而且,当小部件被编辑时,另一个也是如此。希望我很清楚。我有点想它与 appWidgetIds 有关,但我无法弄清楚。
这是我的代码,有点简化。
public class WidgetConfig extends Activity implements OnClickListener, OnItemSelectedListener {
AppWidgetManager awm;
int awID;
Context c;
EditText info;
Button b;
String note;
int styleStart = -1, cursorLoc = 0;
SharedPreferences sp;
Spinner spinner;
String[] paths = { "10", "20", "30" };
File path = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.widgetconfig);
c = WidgetConfig.this;
info = (EditText)findViewById(R.id.etwidgetconfig);
...
b = (Button)findViewById(R.id.bwidgetconfig);
loadPrefs();
b.setOnClickListener(this);
//Getting Info about the widget that launched this activity
Intent i = getIntent();
Bundle extras = i.getExtras();
if (extras != null){
awID = extras.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID,
AppWidgetManager.INVALID_APPWIDGET_ID );
}
awm = AppWidgetManager.getInstance(c);
}
...
private void loadPrefs(){
sp = PreferenceManager.getDefaultSharedPreferences(this);
note = sp.getString("NOTE", "DEFAULT");
info.setText(note);
}
private void savePrefs(String key, String value){
sp = PreferenceManager.getDefaultSharedPreferences(this);
SharedPreferences.Editor editor = sp.edit();
editor.putString(key, value); // value to store
editor.commit();
}
public void onClick(View v) {
// TODO Auto-generated method stub
savePrefs("NOTE", info.getText().toString());
RemoteViews views = new RemoteViews(c.getPackageName(), R.layout.widget);
views.setTextViewText(R.id.tvConfigInput, info.getText());
ComponentName thisWidget = new ComponentName(this, Widget.class);
AppWidgetManager manager = AppWidgetManager.getInstance(this);
manager.updateAppWidget(thisWidget, views);
Intent in = new Intent(c, WidgetConfig.class);
PendingIntent pi = PendingIntent.getActivity(c, 0, in, PendingIntent.FLAG_UPDATE_CURRENT);
views.setOnClickPendingIntent(R.id.B_EditAgain, pi);
awm.updateAppWidget(awID, views);
Intent result = new Intent();
result.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, awID);
setResult(RESULT_OK, result);
finish();
}
}
更新:
所以我尝试了这个,但没有什么不同,仍然不起作用。
private void loadPrefs(){
sp = context.getSharedPreferences("widget" + String.valueOf(appWidgetId)
, Context.MODE_PRIVATE);
note = sp.getString("Note", "");
info.setText(note);
}
private void savePrefs(String key, String value){
sp = context.getSharedPreferences("widget" + String.valueOf(appWidgetId)
, Context.MODE_PRIVATE);
Editor editor = sp.edit();
editor.clear();
editor.putString("Note", info.getText().toString());
editor.putString(key, value); // value to store
editor.commit();
}