我正在使用 RecyclerView
列出一些文本,现在我想这样做,以便当用户单击文本时弹出自定义警报对话框。
到目前为止我已经试过了但是得到了一个 NullPointerException;这里可能有什么问题?
public class CBAdapter extends RecyclerView.Adapter<CBAdapter.ViewHolder> {
List<AdapterData> mItems;
public CBAdapter() {
super();
mItems = new ArrayList<>();
AdapterData data = new AdapterData();
data.setTextOne("Many Bows");
mItems.add(data);
data = new AdapterData();
data.setTextOne("Pardon");
mItems.add(data);
data = new AdapterData();
data.setTextOne("Fall To Knees & Beg");
mItems.add(data);
data = new AdapterData();
data.setTextOne("Backflips");
mItems.add(data);
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View v = LayoutInflater.from(viewGroup.getContext())
.inflate(R.layout.test3, viewGroup, false);
return new ViewHolder(v);
}
@Override
public void onBindViewHolder(ViewHolder viewHolder, int i) {
AdapterData data = mItems.get(i);
viewHolder.textOne.setText(data.getTextOne());
}
@Override
public int getItemCount() {
return mItems.size();
}
class ViewHolder extends RecyclerView.ViewHolder{
public TextView textOne;
private Context context;
public ViewHolder(View itemView) {
super(itemView);
textOne = (TextView)itemView.findViewById(R.id.textView1);
itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
final Dialog dialog = new Dialog(context);
dialog.setContentView(R.layout.custom_dialog);
dialog.setTitle("Title");
TextView text = (TextView) dialog.findViewById(R.id.text);
text.setText("hello world");
ImageView image = (ImageView) dialog.findViewById(R.id.image);
image.setImageResource(R.drawable.ic_launcher);
Button dialogButton = (Button) dialog.findViewById(R.id.dialogButtonOK);
dialogButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
}
});
dialog.show();
}
});
}
}
}
最佳答案
没关系我忘了初始化我的上下文
context = itemView.getContext();
关于android - 使用 RecyclerView 的自定义警报对话框,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/33560276/