今天是我使用 ViewPager 在我的活动中滑过屏幕的第一天。但是,添加 ViewPager 后,任何活动中的所有按钮都不起作用。我只能在我的活动之间滑动。我不明白为什么会这样,所以任何帮助都会非常感激。谢谢!
这是PageAdapter类代码:
PageAdapter.java
public class PagerAdapter extends FragmentPagerAdapter {
public PagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
switch (position){
case 0:
return new FragmentOne();
break;
case 1:
return new FragmentTwo();
break;
case 2:
return new FragmentThree();
break;
default:
break;
}
return null;
}
@Override
public int getCount() {
return 3;
}
}
这是片段代码:
FragmentOne.java
public class FragmentOne extends Fragment {
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
return inflater.inflate(R.layout.activity_log,container,false);
}
}
FragmentTwo.java
public class FragmentTwo extends Fragment {
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
return inflater.inflate(R.layout.activity_remote_lock,container,false);
}
}
FragmentThree.java
public class FragmentThree extends Fragment {
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
return inflater.inflate(R.layout.activity_my_keys,container,false);
}
}
FragmentActivity.java
public class FragmentActivity extends android.support.v4.app.FragmentActivity {
ViewPager viewPager;
@Override
protected void onResume() {
super.onResume();
viewPager.setCurrentItem(1);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fragment);
viewPager = (ViewPager) findViewById(R.id.damsara);
PagerAdapter adapter = new PagerAdapter(getSupportFragmentManager());
viewPager.setAdapter(adapter);
}
}
FragmentActivity.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.view.ViewPager
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/damsara"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.v4.view.ViewPager>
我添加到片段类的xml文件包含带动画的按钮。但是它们都不起作用。