Question

我正在使用微调器显示月份列表。

但我想将图像设置为覆盖月份列表？但我没有找到任何精确的解决方案。

Answer 1

Spinner.xml：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<Spinner 
    android:id="@+id/spinner1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:drawSelectorOnTop="true" />        
<ImageView android:id="@+id/myimgview" android:layout_width="fill_parent" android:layout_height="fill_parent"></ImageView>
</LinearLayout>

您的活动类必须如下所示：

package my.co.home;

import android.app.Activity;
import android.content.Intent;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.Spinner;
import android.widget.AdapterView.OnItemSelectedListener;

public class ViewsActivity extends Activity 
{
String[] presidents = {
        "January",
        "February",
        "March",
        "December"
};

Spinner s1;
ImageView ivl;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);  

    //startActivity(new Intent(this, SpinnerActivity.class));

    s1 = (Spinner) findViewById(R.id.spinner1);
    ivl=(ImageView) findViewById(R.id.myimgview);

    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
        android.R.layout.simple_spinner_item, presidents);

    s1.setAdapter(adapter);
    s1.setOnItemSelectedListener(new OnItemSelectedListener()
    {
        public void onItemSelected(AdapterView<?> arg0, 
        View arg1, int arg2, long arg3) 
        {
            int index = s1.getSelectedItemPosition();
            //Depending on index you display the image..For example i have taken for //two indexes
            if(index==1)
                ivl.setBackgroundDrawable(getResources().getDrawable(R.drawable.images));
            else if(index==2)
                ivl.setBackgroundDrawable(getResources().getDrawable(R.drawable.images1));
        }

        public void onNothingSelected(AdapterView<?> arg0) {}
    });

}
}

如何设置imeg覆盖微调器列表项？

1 个答案: