Question

我希望能够从Spinner中选择一个项目，并将该项目显示在ImageView中。我试过这样做，我的示例代码如下。还有另一种方法吗？

活动类

    public class Campsites  extends Activity{ 
            @Override 
                public void onCreate(Bundle savedInstanceState) { 
                super.onCreate(savedInstanceState); 
                setContentView(R.layout.campsites); 


                Spinner spinner = (Spinner) findViewById(R.id.spinner1); 
                ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.Camp_Site_Facilities, android.R.layout.simple_spinner_item); 
                adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
                spinner.setAdapter(adapter); 
            }

    public void onItemSelected(AdapterView<?> parent, View view, 
            int pos, long id) {

            ((ImageView) findViewById(R.id.imageView1)).setImageResource(0);
            ((ImageView) findViewById(R.id.imageView1)).setImageResource(R.drawable.bergendal1);


    }

    public void onNothingSelected(AdapterView<?> parent) {
        // Another interface callback
    }
}

布局XML

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="@drawable/elephant" >

<Spinner
    android:id="@+id/spinner1"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true"
    android:layout_centerHorizontal="true" />

<ImageView
    android:id="@+id/imageView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true"
    android:scaleType="fitXY"/>

我在字符串中创建了这个

 <string-array name="Camp_Site_Facilities">
    <item>Berg en Dal</item>
    <item>Crocodile Bridge</item>
    <item>Letaba</item>
    <item>Lower Sabie</item>
    <item>Mopani</item>
    <item>Olifants</item>
    <item>Orpen</item>
    <item>Pretoriuskop</item>
    <item>Punda Maria</item>
    <item>Satara</item>
    <item>Shingwedzi</item>
    <item>Skukuza</item>
</string-array>

任何帮助将不胜感激。

Answer 1

检查是否有效

spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
    // your code for setting the image based on the item clicked....here
}

@Override
public void onNothingSelected(AdapterView<?> parentView) {
    // your code here
}

});

如何在微调器选择中在imageview中显示和成像

1 个答案: