我已经在谷歌搜索了一个解决方案,并在堆栈溢出。我也知道这可能是堆栈溢出中提出的另一个问题的重复,但我尝试了提供的代码片段,但没有一个工作。喜欢:Taking user selection in a spinner, storing it in sharedPrefences, and using it in another activity和not getting integer value from SharedPreference以及http://www.acnenomor.com/4379973p1/how-to-save-spinner-selecteditem-to-sharedpreferences
这是我的问题。我有第一个活动,有两个来自本教程http://www.mkyong.com/android/android-spinner-drop-down-list-example/的微调器。按下提交按钮,id就像将所选值保存在SharesPreferences.On上进入第二个活动,我检索选定的值并将其显示在文本视图上。因此,在下一个应用程序启动时,我会转到第二个活动以查找显示的已保存值。我真的被搁浅了。请指出我正确的方向。非常感谢任何帮助。
主要活动
public class MyAndroidAppActivity extends Activity {
private Spinner spinner1, spinner2;
private Button btnSubmit;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
addItemsOnSpinner2();
addListenerOnButton();
addListenerOnSpinnerItemSelection();
}
// add items into spinner dynamically
public void addItemsOnSpinner2() {
spinner2 = (Spinner) findViewById(R.id.spinner2);
List<String> list = new ArrayList<String>();
list.add("list 1");
list.add("list 2");
list.add("list 3");
ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this,
android.R.layout.simple_spinner_item, list);
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner2.setAdapter(dataAdapter);
}
public void addListenerOnSpinnerItemSelection() {
spinner1 = (Spinner) findViewById(R.id.spinner1);
spinner1.setOnItemSelectedListener(new CustomOnItemSelectedListener());
}
// get the selected dropdown list value
public void addListenerOnButton() {
spinner1 = (Spinner) findViewById(R.id.spinner1);
spinner2 = (Spinner) findViewById(R.id.spinner2);
btnSubmit = (Button) findViewById(R.id.btnSubmit);
btnSubmit.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(MyAndroidAppActivity.this,
"OnClickListener : " +
"\nSpinner 1 : "+ String.valueOf(spinner1.getSelectedItem()) +
"\nSpinner 2 : "+ String.valueOf(spinner2.getSelectedItem()),
Toast.LENGTH_SHORT).show();
}
});
}
}
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CustomOnItemSelectedListener.java
public class CustomOnItemSelectedListener implements OnItemSelectedListener {
public void onItemSelected(AdapterView<?> parent, View view, int pos,long id) {
Toast.makeText(parent.getContext(),
"OnItemSelectedListener : " + parent.getItemAtPosition(pos).toString(),
Toast.LENGTH_SHORT).show();
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
}
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答案 0 :(得分:0)
如果您想在下次发布活动时设置文字,则应阅读偏好设置中的文字,并将其设置为活动onResume()
方法中的文字视图。
希望它有所帮助!
编辑: 如果要在首选项中设置int:
SharedPreferences sp = getSharedPreferences("your_prefs", Activity.MODE_PRIVATE);
SharedPreferences.Editor editor = sp.edit();
editor.putInt("your_int_key", yourIntValue);
editor.commit();
然后,在你的onResume()方法中:
SharedPreferences sp = getSharedPreferences("your_prefs", Activity.MODE_PRIVATE);
int savedInt = sp.getInt("your_int_key", 0);
正如您刚刚分享的链接中所述;)
答案 1 :(得分:0)
我终于能够做到了。我使用了本教程(http://androidopentutorials.com/android-sharedpreferences-tutorial-and-example/) 我修改了这段代码以适合我想要的
public void onClick(View v) {
text = String.valueOf(spinner1.getSelectedItem()) + String.valueOf(spinner2.getSelectedItem());
sharedPreference.save(context, text);
谢谢你们。赞赏。