我在res / values / strings.xml中有一个整数数组,如下所示:
<integer-array name="test">
<item>@drawable/ic_launcher</item>
<item>@drawable/ic_launcher</item>
<item>@drawable/ic_launcher</item>
<item>@drawable/ic_launcher</item>
<item>@drawable/ic_launcher</item>
</integer-array>
我想以编程方式创建一组图像按钮,但是当我使用setImageResource(forimageview [i])时,无法看到图像。
我的MainActivity类:
public class MainActivity extends Activity {
int [] forimageview ;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
addchild();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
private void addchild(){
Resources res = getResources();
forimageview = res.getIntArray(R.array.test);
LinearLayout linearlayout = (LinearLayout)findViewById(R.id.mylayout);
for(int i = 0 ; i < forimageview.length ; ++i){
ImageButton imagebutton = new ImageButton(getApplicationContext());
imagebutton.setId(i+1);
LinearLayout.LayoutParams imageparams = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
imagebutton.setScaleType(ImageView.ScaleType.MATRIX);
imagebutton.setImageResource(forimageview[i]);
imagebutton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
}
});
linearlayout.addView(imagebutton, imageparams);
}
}
}
结果:
编辑:
我的布局:
<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:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<LinearLayout
android:id="@+id/mylayout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
>
</LinearLayout>
</RelativeLayout>
答案 0 :(得分:2)
我认为你定义array
的方式不正确。首先,您要在strings.xml
中定义它,它必须位于arrays.xml
。
其次,它不是int
数组,而是string
数组,所以它必须是这样的:
<string-array name="your_imgs">
<item>@drawable/first</item>
<item>@drawable/second</item>
<item>@drawable/third</item>
</string-array>
要访问它们,只需使用以下内容:
TypedArray imgs = getResources().obtainTypedArray(R.array.your_imgs);
for (int i = 0; i < imgs.length(); i++)
myView.setImageResource(imgs.getResourceId(i, -1));
更多关于docs中的TypedArray。