单击按钮更改操作栏标题

Question

我有两个Activity activity1和activity2,activity1有两个按钮,button1和button2.当点击button1它应链接到activity2应该在Action-bar中有标题有"am button1",当点击button2它再次链接到activity2并且它应该在Action-bar中有标题"am button2".

1. 当button1单击Activity1时,它应该通过put-extra of intent传递数据并更改活动action-bar title有"am button1".
2. Activity2应该从activity1接收数据并更改其中的action-bar.

任何身体请帮助我这样做.

Answer 1

活动1班

public class ActivityOne extends Activity{

Button btnOne, btnTwo;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

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

        @Override
        public void onClick(View arg0) {
            Intent intent = new Intent(ActivityOne.this, ActivityTwo.class);
            intent.putExtra("title", "am Button1");
            startActivity(intent);

        }
    });

    btnTwo = (Button) findViewById(R.id.btnTwo);
    btnOne.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View arg0) {
            Intent intent = new Intent(ActivityOne.this, ActivityTwo.class);
            intent.putExtra("title", "am Button2");
            startActivity(intent);

        }
    });
}
}

ActivityTwo类

public class ActivityTwo extends Activity{

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    Intent intent = getIntent();
    String title = intent.getStringExtra("title");

    getActionBar().setTitle(title);
}

}