Reputation: 79
I don't know why it gets NullPointerException provided that my Button has been initialized. Here is my code. Hope you guys can help. Thanks
public boolean onOptionsItemSelected(MenuItem item)
{ switch (item.getItemId())
{
case SEARCH:
inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
AlertDialog.Builder search = new AlertDialog.Builder(this);
search.setTitle(R.string.search);
searchDialog = inflater.inflate(R.layout.search,null);
search.setView(searchDialog);
//The problem should be here
searchButton = (Button) findViewById(R.id.searchButton);
//R.id.searchButton is inside the layout, search.xml
searchButton.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{ //For testing
Toast.makeText(getApplicationContext(),
"Search was clicked!", Toast.LENGTH_SHORT).show();
}
});
AlertDialog searchDialog = search.create();
searchDialog.show();
return true;
.
.
.
Upvotes: 0
Views: 143
Reputation: 34765
searchDialog = inflater.inflate(R.layout.search,null);
the above line is changed and and for initializing a button you must use the reference of view.
public boolean onOptionsItemSelected(MenuItem item)
{ switch (item.getItemId())
{
case SEARCH:
inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
AlertDialog.Builder search = new AlertDialog.Builder(YourActivity.this);
search.setTitle(R.string.search);
View view = inflater.inflate(R.layout.search,null);
search.setView(view);
//The problem should be here
searchButton = (Button)view.findViewById(R.id.searchButton);
//R.id.searchButton is inside the layout, search.xml
searchButton.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{ //For testing
Toast.makeText(getApplicationContext(),
"Search was clicked!", Toast.LENGTH_SHORT).show();
}
});
AlertDialog searchDialog = search.create();
searchDialog.show();
return true;
.
.
.
Upvotes: 1