TextView findviewbyID NullpointerException

Question

我真的找不到问题......

我有一个onOptionItemSelected。

当调用textView.setText时，我得到一个NPE因为findviewbyID不起作用。有什么想法吗？

AlertDialog.Builder builder = new AlertDialog.Builder(this);
LayoutInflater inflater = this.getLayoutInflater();

builder.setView(inflater.inflate(R.layout.latest_detailview_info, null))
    .setPositiveButton(R.string.btn_ok,
     new DialogInterface.OnClickListener() {
         @Override
         public void onClick(DialogInterface dialog, int id) {
             //do haxx
         }
     });

TextView textView = (TextView) findViewById(R.id.properties_latest_uploadedby);
textView.setText("NPE");

builder.create();
builder.show();

Answer 1

尝试添加以下更改。

LayoutInflater inflater=this.getLayoutInflater();
View view=inflater.inflate(R.layout.latest_detailview_info, null);

builder.setView(view)
        .setPositiveButton(R.string.btn_ok, new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int id) {
                //do haxx
            }
        });

TextView textView = (TextView) view.findViewById(R.id.properties_latest_uploadedby);
textView.setText("NPE");

builder.create();
builder.show();