我有一个包含 5 个微调器的选项页面。当用户登录并修改其帐户选项时，我希望微调器加载用户对微调器的选择。目前，每个微调器在其适配器"请选择"中加载第一个值。如果检查了服务器并且用户尚未做出选择，那很好 - 但我希望根据明显的条件来决定。
有没有好方法可以做到这一点？我刚刚完成了将微调器选项发送到服务器并将它们与相应用户一起存储的代码。所以我知道我需要不同的PHP查询，没问题。但是如何为 onCreate 中的微调器设置可见值？
ageSpinner = (Spinner) findViewById(R.id.ageSpinner);
ageAdapter = ArrayAdapter.createFromResource
(this, R.array.ageArray, android.R.layout.simple_spinner_item);
ageAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
ageSpinner.setAdapter(ageAdapter);
ageSpinner.setTag("age");
ageSpinner.setOnItemSelectedListener(new MyOnItemSelectedListener());
eduSpinner = (Spinner) findViewById(R.id.eduSpinner);
eduAdapter = ArrayAdapter.createFromResource
(this, R.array.eduArray, android.R.layout.simple_spinner_item);
eduAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
eduSpinner.setTag("edu");
eduSpinner.setAdapter(eduAdapter);
eduSpinner.setOnItemSelectedListener(new MyOnItemSelectedListener());
maritalSpinner = (Spinner) findViewById(R.id.maritalSpinner);
maritalAdapter = ArrayAdapter.createFromResource
(this, R.array.maritalArray, android.R.layout.simple_spinner_item);
maritalAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
maritalSpinner.setTag("marital");
maritalSpinner.setAdapter(maritalAdapter);
maritalSpinner.setOnItemSelectedListener(new MyOnItemSelectedListener());
nationalitySpinner = (Spinner) findViewById(R.id.nationalitySpinner);
nationalityAdapter = ArrayAdapter.createFromResource
(this, R.array.nationalityArray, android.R.layout.simple_spinner_item);
nationalityAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
nationalitySpinner.setTag("nationality");
nationalitySpinner.setAdapter(nationalityAdapter);
nationalitySpinner.setOnItemSelectedListener(new MyOnItemSelectedListener());
public class MyOnItemSelectedListener implements OnItemSelectedListener {
public void onItemSelected(AdapterView<?> parent,
View view, int pos, long id) {
if (pos != 0) {
param.add(new BasicNameValuePair(parent.getTag().toString(),
parent.getItemAtPosition(pos).toString()));
}
}
public void onNothingSelected(AdapterView parent) {
// Do nothing.
}
}
你应该创建一个扩展BaseAdapter的类，使用接受列表(字符串列表(的构造函数并使其实现SpinnerAdapter：
public class MySpinnerAdapter extends BaseAdapter<String> implements SpinnerAdapter {
public MySpinnerAdapter(Context context, List<String> listStrings ) {
super( context, android.R.layout.android.R.layout.simple_list_item_1, listStrings );
}
public View getDropDownView(int position, View convertView, ViewGroup parent) {
if( convertView == null ) {
convertView = new TextView( getContext() );
}
((TextView) convertView).setText( getItem( position) );
}
}
我使用链接到自定义对话框的EditTexts来显示数据。它的效果要好得多。我有AsyncTasks将数据加载到不可编辑的EditTexts onCreate和onSubmit中。下面是一些相关的代码：
ageEditText = (EditText) findViewById(R.id.ageEditText);
ageEditText.setOnClickListener(fieldListener);
ageEditText.setId(0);
educationEditText = (EditText) findViewById(R.id.educationEditText);
educationEditText.setOnClickListener(fieldListener);
educationEditText.setId(1);
maritalEditText = (EditText) findViewById(R.id.maritalEditText);
maritalEditText.setOnClickListener(fieldListener);
maritalEditText.setId(2);
backgroundEditText = (EditText) findViewById(R.id.backgroundEditText);
backgroundEditText.setOnClickListener(fieldListener);
backgroundEditText.setId(3);
incomeEditText = (EditText) findViewById(R.id.incomeEditText);
incomeEditText.setOnClickListener(fieldListener);
incomeEditText.setId(4);
partyEditText = (EditText) findViewById(R.id.partyEditText);
partyEditText.setOnClickListener(fieldListener);
partyEditText.setId(5);
public OnClickListener fieldListener = new OnClickListener(( { public void onClick(View v( { FragmentManager fm = getSupportFragmentManager((; switch (v.getId((( { 案例 (0( ：
ChooseDialog ageDialog = new ChooseDialog("Age", ageEditText, act);
ageDialog.show(fm, "fragment_edit_name");
break;
case (1) :
ChooseDialog educationDialog = new ChooseDialog("Education", educationEditText, act);
educationDialog.show(fm, "fragment_edit_name");
break;
case (2) :
ChooseDialog maritalDialog = new ChooseDialog("Marital", maritalEditText, act);
maritalDialog.show(fm, "fragment_edit_name");
break;
case (3) :
ChooseDialog backgroundDialog = new ChooseDialog("Background", backgroundEditText, act);
backgroundDialog.show(fm, "fragment_edit_name");
break;
case (4):
ChooseDialog incomeDialog = new ChooseDialog("Income", incomeEditText, act);
incomeDialog.show(fm, "fragment_edit_name");
break;
case (5):
ChooseDialog partyDialog = new ChooseDialog("Income", partyEditText, act);
partyDialog.show(fm, "fragment_edit_name");
break;
}
}
};
private void submit() {
params = new ArrayList<NameValuePair>();
getButtons();
params.add(new BasicNameValuePair("age", ageEditText.getText().toString()));
params.add(new BasicNameValuePair("marital", maritalEditText.getText().toString()));
params.add(new BasicNameValuePair("background", backgroundEditText.getText().toString()));
params.add(new BasicNameValuePair("education", educationEditText.getText().toString()));
params.add(new BasicNameValuePair("income", incomeEditText.getText().toString()));
params.add(new BasicNameValuePair("sex", sexString));
params.add(new BasicNameValuePair("employment", empString));
params.add(new BasicNameValuePair("party", partyEditText.getText().toString()));
params.add(new BasicNameValuePair("user", dbHandler.getUserDetails().get("email").toString()));
DemoTask demoTask = new DemoTask(act, params);
demoTask.execute();
}