微调OnItemSelectedListener问题 [英] Spinner OnItemSelectedListener Issue

问题描述

我有微调控制问题。我想动态设置微调的项目。起初，我有一个项目的微调。

I have problem with spinner control. I am trying to set spinner items dynamically. Initially I have one item in spinner.

当我尝试注册spinner.setOnItemSelect监听器，它会立即调用它onItemSelected方法。不过，我并不想只要我的活动开始调用此方法。

When I try to register the spinner.setOnItemSelect Listener, it immediately call onItemSelected method of it. However I don't want to call this method as soon as my activity get started.

因此​​，对于这个我把下面的条件。

So for this I put a following condition.

public class SpinnerActivity extends Activity implements OnItemSelectedListener {

Spinner spinner;

String[] str_arr = {"aaaaaaaa"};

private int mSpinnerCount=0;

private int mSpinnerInitializedCount=0;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_spinner);

    spinner = (Spinner) findViewById(R.id.spinner1);

    spinner.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, str_arr));

    spinner.setOnItemSelectedListener(this);        

    mSpinnerCount=1;

}

@Override
public void onItemSelected(AdapterView<?> adapterView, View view, int position, long id) {

    if (mSpinnerInitializedCount < mSpinnerCount) {
        mSpinnerInitializedCount++;
    }

    else {

        Intent intent = new Intent(this, NextActivity.class);
        startActivity(intent);
    }

}

@Override
public void onNothingSelected(AdapterView<?> arg0) {

}
  }

但是，当我尝试在微调选择一个项目它给出的logcat以下警告，

But when I try to select an item on spinner it gives following warning in logcat,

13 09-03：02：02.528：W / InputManagerService（59）：窗口已经集中，忽视聚焦增益：com.android.internal.view.IInputMethodClient$Stub$Proxy@450fafb8

09-03 13:02:02.528: W/InputManagerService(59): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@450fafb8

我得到的想法，之前，除非微调不会改变这个方法的项目将不会被调用。

I get the idea that until and unless Item of spinner won't change this method won't be called.

不过，我有微调的一个值，所以如何获得焦点，任何想法？

But I have one value in spinner, so how to get the focus, any idea?

推荐答案

试试这样

@Override
public void onItemSelected(AdapterView<?> adapterView, View view, int position, long id) {

    if (position != 0) {
       //put your actions here
    }

    else {
      // nothing here or toast 
    }

}

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