按钮onClick不起作用

Question

我在每个页面上制作了一个有三个布局的viewPager ......我想在第二页上处理一个按钮,但不知何故我不能......(PS:没有按钮代码,我的viewPager工作)我只是简单地尝试更改背景点击时......

这是我的代码:

public class ViewPagerProjectActivity extends Activity implements OnClickListener{

Button btn;

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

    ViewPagerAdapter adapter = new ViewPagerAdapter( this );
    ViewPager pager = (ViewPager)findViewById( R.id.viewpager );
    pager.setAdapter( adapter );
    pager.setCurrentItem(0);


}


public void OnClick(View v) {
    if(v.equals(btn)) {
    LinearLayout l = (LinearLayout) findViewById(R.id.deneme2);
            l.setBackgroundDrawable(getResources().getDrawable(R.drawable.background));
    }       
}    
}

这是错误:

E/AndroidRuntime(273): FATAL EXCEPTION: main
E/AndroidRuntime(273): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.yahya.ViewPagerProject/com.yahya.ViewPagerProject.ViewPagerProjectActivity}: java.lang.ClassCastException: com.yahya.ViewPagerProject.ViewPagerProjectActivity
E/AndroidRuntime(273):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
E/AndroidRuntime(273):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
E/AndroidRuntime(273):  at android.app.ActivityThread.access$2300(ActivityThread.java:125)

Answer 1

尝试这些线,我希望它有效......

View deneme2lout = (View) getView.inflate(R.layout.deneme2,null);
btn = (Button) deneme2lout.findViewById(R.id.button1);
btn.setOnClickListener(this);