Question

Android 怎么设置Gallery长按事件

Answer 1

gallery.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {

@Override
public boolean onItemLongClick(AdapterView<?> arg0, View arg1,
int arg2, long arg3) {
// TODO Auto-generated method stub
//写操作代码
return false;
}

});

Answer 2

Gallery.setOnItemLongClickListener(AdapterView.OnItemLongClickListener listener)
如果是学开发，建议多看Android文档。

追问

能不能详细一点啊 光这么写就报错了

追答

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;
import android.widget.Toast;

public class GalleryDemo extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.test);
Gallery g = (Gallery) findViewById(R.id.grellyDemo);
ImageAdapter imageAdapter = new ImageAdapter(this);
g.setAdapter(imageAdapter);
g.setOnItemLongClickListener(new OnItemLongClickListener() {

@Override
public boolean onItemLongClick(AdapterView adapter, View v,
int position, long rowid) {
Toast.makeText(GalleryDemo.this, "------------->" + position,
Toast.LENGTH_LONG).show();//这里写你自己的长按时间处理。
return false;
}

});
}

public class ImageAdapter extends BaseAdapter {
private Context mContext;

private Integer[] mImageIds = { R.drawable.color_00,
R.drawable.color_01, R.drawable.color_02, R.drawable.color_03,
R.drawable.color_04, R.drawable.color_05, R.drawable.color_06,
R.drawable.color_07 };

public ImageAdapter(Context c) {
mContext = c;
}

public int getCount() {
return mImageIds.length;
}

public Object getItem(int position) {
return position;
}

public long getItemId(int position) {
return position;
}

public View getView(int position, View convertView, ViewGroup parent) {
ImageView i = new ImageView(mContext);

i.setImageResource(mImageIds[position]);
i.setScaleType(ImageView.ScaleType.FIT_XY);
i.setLayoutParams(new Gallery.LayoutParams(136, 88));

return i;
}
}
}

这个你运行就知道了。