Launching a new activity - android

问题

i'm new to programming in Java and android... Here is my question, again not sure if the information I provide is sufficient. What I'm trying to do is create a simple two activity app.... So i have the main activity and a user clicks a button and a new activity is launched that sets a new layout.

I've looked at the two following websites:

http://developer.android.com/guide/components/fragments.html

http://www.vogella.com/articles/Android/article.html#fragments_tutorial

Both very useful but when I tried to implement had issues.

public class MainActivity extends Activity {


@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    final Button buttonLoadProfile = (Button) findViewById(R.id.buttonLoadProfile);
    buttonLoadProfile.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            Intent profileIntent = new Intent();
            profileIntent.setClass(getActivity(),LoadProfile.class);
//              setContentView(R.layout.profile_layout);
        }
    });
}

The error I get is "The method getActivity() is undefined for the type new View.OnClickListener(){}"

回答1:

Use

    Intent profileIntent = new Intent( MainActivity.this, LoadProfile.class );
    startActivity(profileIntent);

This will resolve the enclosing class from the inner.

回答2:

You cannot call getActivity() in the new View.OnClickListener() interface because it does not have the method described in it. Instead do the following:

Intent profileIntent = new Intent(this, LoadProfile.class);

And add:

startActivity(profileIntent);

To summarize the change:

public void onClick(View v) {
            Intent profileIntent = new Intent(this, LoadProfile.class);
            startActivity(profileIntent);

        }

来源：https://stackoverflow.com/questions/13003898/launching-a-new-activity-android

标签

android

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