嵌套SetOnClickListener

Question

可以嵌套OnClickListener，即。

 setContentView(R.layout.activity_main);
 add = (Button) findViewById(R.id.bAdd);
 add.setOnClickListener(new View.OnClickListener() {

            public void onClick(View v) {
                 // TODO Auto-generated method stub
                          setContentView(R.layout.secondary);
                          sub = (Button) findViewById(R.id.bSub);   

            }

有效吗？假设在单击时，activity_main.xml中有一个名为Sub的按钮应该转到另一个视图？

Answer 1

是的你可以，但这不是好的做法...... 为什么你不能使用两个Activities并使用Intents来切换它们..：）

示例代码..

public class MainActivity extends Activity {

Button buttonone;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    buttonone = (Button) findViewById(R.id.buttonone);
    buttonone.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View view) {
            Intent intent = new Intent(MainActivity.this,
                    SecondaryActivity.class);
            startActivity(intent);
        }
    });

}

}

public class SecondaryActivity extends Activity {

Button buttontwo;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.secondary);
    buttontwo = (Button) findViewById(R.id.buttontwo);
    buttontwo.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View view) {

//随便......             } });

}

}