我在我的Fragment类中,该类的微调器包含区域设置。用于文本转语音
mylocale = localeList.get(position);
textToSpeech.setLanguage(mylocale);
spinnerposition = Integer.valueOf(String.valueOf(localeList.get(position)));
我想使用sharedpreferences
保存职位,这是我正在尝试的:
public void savepos(){
sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getActivity());
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putInt(POSITION , spinnerposition);
editor.apply();
}
我已将微调器位置声明为全局变量
int spinnerposition;
这是我获取位置的方法:
public void saveposload(){
sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getActivity());
int position = sharedPreferences.getInt(POSITION ,1);
mspinner.setSelection(sharedPreferences.getInt(POSITION, position));
}
但是我不能这样做,应用崩溃了,请帮助
这是日志中的异常
2018-12-30 15:13:49.904 3611-3611/my.uapp.com E/AndroidRuntime: FATAL EXCEPTION: main
Process: my.uapp.com, PID: 3611
java.lang.NumberFormatException: For input string: "it_IT"
at java.lang.Integer.parseInt(Integer.java:521)
at java.lang.Integer.valueOf(Integer.java:611)
at my.uapp.com.Tab0$override.onItemSelected(Tab0.java:363)
at my.uapp.com.Tab0$override.access$dispatch(Tab0.java)
at my.uapp.com.Tab0.onItemSelected(Tab0.java)
at android.widget.AdapterView.fireOnSelected(AdapterView.java:931)
at android.widget.AdapterView.dispatchOnItemSelected(AdapterView.java:920)
at android.widget.AdapterView.-wrap1(AdapterView.java)
at android.widget.AdapterView$SelectionNotifier.run(AdapterView.java:890)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:756)
答案 0 :(得分:0)
localeList
是存储所有语言环境(例如"it_IT"
等)的列表吗?
如果是这种情况,那么:
localeList.get(position)
是字符串,并且不能用以下行将其解析为 int :
spinnerposition = Integer.valueOf(String.valueOf(localeList.get(position)));
也许您只需要这个:
public void saveposload(){
sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getActivity());
mspinner.setSelection(sharedPreferences.getInt(POSITION, 0));
}
请确保在设置适配器后调用saveposload()
。
答案 1 :(得分:0)
尝试以下方法:
@Override
public void onItemSelected(AdapterView<?> parent, View v, int position,
long id) {
mylocale = localeList.get(position);
textToSpeech.setLanguage(mylocale);
savpos(position);
}
public void savepos(int position) {
sharedPreferences = this.getActivity().getSharedPreferences("stored_position", Context.MODE_PRIVATE)
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putInt("pos" , position).apply;
}
public void saveposload(){
sharedPreferences = this.getActivity().getSharedPreferences("stored_position", Context.MODE_PRIVATE)
int position = sharedPreferences.getInt("pos",0); //zero being the default value
mspinner.setSelection(position);
}
在saveposload()上放置一个断点,并检查位置是否正确检索或现在检索。您在哪里打电话给saveposload()
您无需将头寸存储在private Spinner firstSpinner;