Java 如何在ListActivity之后更改ImageView?
我们的想法是转到ListActivity,单击一个项目,如果单击项目X,它将显示一个特殊的图像 这是我的安卓代码Java 如何在ListActivity之后更改ImageView?,java,android,imageview,listactivity,Java,Android,Imageview,Listactivity,我们的想法是转到ListActivity,单击一个项目,如果单击项目X,它将显示一个特殊的图像 这是我的安卓代码 package vds.cmc; public class Dae extends ListActivity { static final String bigfoot[] = {"Boy", "Girl"}; ImageView iv; @Override protected void onCreate(Bundle savedInstanceState) { // T
package vds.cmc;
public class Dae extends ListActivity {
static final String bigfoot[] = {"Boy", "Girl"};
ImageView iv;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setListAdapter(new PeopleAdapter(this, bigfoot));
iv = (ImageView) findViewById(R.id.ivID);
}
@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
// TODO Auto-generated method stub
super.onListItemClick(l, v, position, id);
String qlo = bigfoot[position];
try {
if (qlo == "Girl") {
setContentView(R.layout.ppl);
iv.setImageResource(R.drawable.cw);
}
else {
setContentView(R.layout.ppl);
iv.setImageResource(R.drawable.no);
}
}
catch (Exception e) {
e.printStackTrace();
}
}
}
我该怎么做?或者我该如何修复它
谢谢,我对这一点很陌生。创建一个新活动来查看图像
Intent intent = new Intent(this, ImageViewerActivity.class);
intent.putExtra(EXTRA_IMAGE_ID, R.drawable.boy); //could also pass the resource
startActivity(intent);
然后
public class ImageViewerActivity extends Activity {
private static final String EXTRA_IMAGE_ID = "ImageViewerActivity.EXTRA_IMAGE_ID";
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Bundle extras = getIntent().getExtras();
if (extras == null) {
return;
}
Resource resId = extras.getInt(EXTRA_IMAGE_ID);
mImageView.setImageDrawable(resId);
}
您已经扩展了
ListActivity
,因此这意味着该活动只有一个ListView,没有其他内容
您可以执行以下任何操作:
Intent intent = new Intent(this, ImageViewerActivity.class);
intent.putExtra(EXTRA_IMAGE_ID, R.drawable.boy); //could also pass the resource
startActivity(intent);