我试图根据用户单击的内容更新片段中的textview。当我第一次加载活动时,它设置了textview。但后来,即使textview.settext被调用,似乎没有任何改变。片段中的textview.settext在首次调用后不起作用
在我的活动我发送新的变量是这样的:
getSupportFragmentManager().beginTransaction().add(R.id.pager1, SecondFragment.newInstance(2, "Page # 2", nonStaticRandomInfoSt), "tag").commit();
我的片段:
public static SecondFragment newInstance(int page, String title, String randomInfo) {
SecondFragment fragmentSecond = new SecondFragment();
Bundle args = new Bundle();
args.putInt("someInt", page);
args.putString("someTitle", title);
args.putString("randomInfo", randomInfo);
fragmentSecond.setArguments(args);
return fragmentSecond;
}
// Store instance variables based on arguments passed
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
randomInfo = this.getArguments().getString("randomInfo");
}
// Inflate the view for the fragment based on layout XML
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_second, container, false);
TextView randomInfoTV = (TextView) view.findViewById(R.id.randomInfo);
randomInfoTV.setText(randomInfo); //this is getting called, but it's not changing the textview
randomInfoTV.setMovementMethod(new ScrollingMovementMethod());
return view;
}
编辑:
我有一个viewpager片段。首次输入活动时,默认值将设置为片段中的文本视图。从我的活动布局的列表视图中,用户可以进行选择。当选择一个项目时,我会调用片段管理器并传递新的randomInfo变量。我想更新片段中的textview。我知道正确的值是通过调试传递的,我知道textview.settext也被调用。但由于某种原因,textview保持不变。你有什么建议,为什么发生这种情况?我甚至不知道从哪里开始修复它。
如何创建片段:
public static class MyPagerAdapter1 extends FragmentPagerAdapter {
private static int NUM_ITEMS = 2;
public MyPagerAdapter1(FragmentManager fragmentManager) {
super(fragmentManager);
}
// Returns total number of pages
@Override
public int getCount() {
return NUM_ITEMS;
}
// Returns the fragment to display for that page
@Override
public Fragment getItem(int position) {
switch (position) {
case 0: // Fragment # 0 - This will show FirstFragment
return FirstFragment.newInstance(0, "Page # 1", imageURL);
case 1: // Fragment # 0 - This will show FirstFragment different title
return SecondFragment.newInstance(2, "Page # 2", randomInfoSt);
default:
return null;
}
}
Click事件代码;
listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int position,
long id) {
// TODO Auto-generated method stub
if (!fromservice) {
Log.i(TAG, "about to start service");
//starting service code...
initFragmentVars(position); //this runs the fragmentmanager transaction
}
别的地方做你该做的setText?我只看到一个 – yanivtwin
什么是'nonStaticRandomInfoSt',也许它从来没有改变过? – WenChao
请解释用户如何与您的应用进行交互以及发生了什么。然后解释你希望**发生的事情。 –