只有同意条约Button才可用，否则Button为不可用状态。
package zhang.check;
import android.app.Activity;
import android.os.Bundle;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.TextView;
import android.widget.CompoundButton.OnCheckedChangeListener;
public class check extends Activity {
private Button ok;
private CheckBox checkBox;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ok=(Button)findViewById(R.id.ok);
checkBox=(CheckBox)findViewById(R.id.checkBox);
ok.setEnabled(false);
checkBox.setOnCheckedChangeListener(new CheckBoxListener());
}
class CheckBoxListener implements OnCheckedChangeListener{
@Override
public void onCheckedChanged(CompoundButton arg0, boolean arg1) {
// TODO Auto-generated method stub
if(checkBox.isChecked())
ok.setEnabled(true);
else
ok.setEnabled(false);
}
}
}
布局
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="fill_parent"
android:layout_width="fill_parent"
android:orientation="vertical"
>
<TextView
android:id="@+id/show"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
<CheckBox
android:id="@+id/checkBox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="是否同意条约"
/>
<Button
android:id="@+id/ok"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="提交"
type="submit"
/>
</linearlayout>
