Android 无法在listview中使用基本适配器
我已经尝试过很多教程,试图为listview使用基本适配器,但我无法让它们正常工作。我哪里出了问题 main活动:Android 无法在listview中使用基本适配器,android,listview,baseadapter,Android,Listview,Baseadapter,我已经尝试过很多教程,试图为listview使用基本适配器,但我无法让它们正常工作。我哪里出了问题 main活动: public class MainActivity extends Activity { ListView listView; int[] resIds = new int[] {R.drawable.apple,R.drawable.banana,R.drawable.orange,R.drawable.watermelon}; String[] bal
public class MainActivity extends Activity {
ListView listView;
int[] resIds = new int[] {R.drawable.apple,R.drawable.banana,R.drawable.orange,R.drawable.watermelon};
String[] balls = new String[] {"apple","banana","orange","watermelon"};
String[] engNames = {"1","2","3","4"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = (ListView) findViewById(R.id.listView);
MyAdapter adapter = new MyAdapter(this);
listView.setAdapter(adapter);
Toast.makeText(this,this.toString(),Toast.LENGTH_LONG).show();
}
public class MyAdapter extends BaseAdapter {
Context context;
LayoutInflater myInflater;
public MyAdapter(Context C){
context = C;
myInflater = LayoutInflater.from(this.context);
}
@Override
public int getCount() {
return 0;
}
@Override
public Object getItem(int i) {
return null;
}
@Override
public long getItemId(int i) {
return 0;
}
@Override
public View getView(int i, View view, ViewGroup viewGroup) {
view = myInflater.inflate(R.layout.activity_my_layout,viewGroup,false);
ImageView imgLogo = (ImageView) view.findViewById(R.id.imgLogo);
TextView txtName = (TextView) view.findViewById(R.id.txtName);
TextView txtendName = (TextView) view.findViewById(R.id.txtendName);
imgLogo.setImageResource(resIds[i]);
txtName.setText(balls[i]);
txtendName.setText(engNames[i]);
Toast.makeText(MainActivity.this,"Test",Toast.LENGTH_SHORT).show();
return view;
}
}
}
您必须正确地覆盖getCount和getItem
@Override
public int getCount() {
return balls.length; //your data list length
}
@Override
public Object getItem(int i) {
return balls[i]; //data list item
}
getCount()
应该与您拥有的项目数量相匹配,因此将其更改为4或使用任何数组中的大小。谢谢!是的,它能工作!:)非常感谢你!我现在可以做了!