Android 更改TextView的文本无效
我想更改Android 更改TextView的文本无效,android,textview,android-viewpager,onactivityresult,Android,Textview,Android Viewpager,Onactivityresult,我想更改onActivityResult方法中TextView的文本。它似乎设置正确,但我无法在视图中看到它 TextView位于ViewPager的第三个片段中 这是我的代码: public class TabsFacturasActivity extends SherlockFragmentActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCre
onActivityResult
方法中TextView
的文本。它似乎设置正确,但我无法在视图中看到它
TextView
位于ViewPager
的第三个片段中
这是我的代码:
public class TabsFacturasActivity extends SherlockFragmentActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.fragment_pager);
//...
mAdapter = new MyAdapter(getSupportFragmentManager());
mPager = (ViewPager)findViewById(R.id.pager);
mPager.setAdapter(mAdapter);
//...
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case FILE_SELECT_CODE:
if (resultCode == RESULT_OK) {
adjunto = true;
// Get the Uri of the selected file
Uri uri = data.getData();
// Get the path
String path = "";
try {
path = MyUtility.getPath(this, uri);
} catch (URISyntaxException e) {
myApplication.throwException(this);
e.printStackTrace();
}
String imgName = path.split("/")[path.split("/").length-1];
LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View view = inflater.inflate(R.layout.activity_lectura, null, false);
textViewImg = (TextView) view.findViewById(R.id.textViewUrlImgLectura);
System.out.println("text view before: "+textViewImg.getText()); //It returns correct value "..."
textViewImg.setText(imgName);
textViewImg.invalidate(); //It does nothing
System.out.println("text view after: "+textViewImg.getText()); //It returns correct value with image path
filePath = path;
}
break;
}
super.onActivityResult(requestCode, resultCode, data);
}
private static class MyAdapter extends FragmentPagerAdapter {
private String[] titles = { "VER FACTURAS", "VER CONSUMO", "INTRODUCIR LECTURA" };
public MyAdapter(FragmentManager fragmentManager) {
super(fragmentManager);
}
@Override
public CharSequence getPageTitle(int position) {
return titles[position];
}
@Override
public Fragment getItem(int position) {
switch (position) {
case 0: // Fragment # 0
return new FacturasActivity();
case 1: // Fragment # 1
return new ConsumoActivity();
case 2:// Fragment # 2
return new LecturaActivity(); //TextView is here
}
return null;
}
@Override
public int getCount() {
return titles.length;
}
}
}
如您所见,我尝试过使用使无效
,但它没有任何作用。如何解决这个问题?试试textViewImg.requestLayout()代码>您的片段可能有问题。可能在您可能已加载的另一个片段中有另一个具有相同id的textview,并且正在设置文本。尝试打印textview ID的值 我已经解决了这个问题:
我在这里获得我的片段的实例和访问方法:
LecturaActivity lecturaFragment = (LecturaActivity)
getSupportFragmentManager().findFragmentByTag(
"android:switcher:"+R.id.pager+":"+2);
lecturaFragment.changeImgText(imgName);
我在textViewImg.setText(imgName)
之后设置了它,但它不起任何作用。您确定代码正在执行吗?你试过调试它吗?你在片段视图中添加了视图
?我已经更新了我的问题TextView
位于第三个Fragment
(讲师活动)。您正在膨胀一个新的活动\u讲师a
,但您没有将其添加到片段的视图中我该如何添加它?这将解决您的问题他正在膨胀一个新的活动\u讲师a
…并且从不将其添加到片段的视图中我猜,此处使用的寻呼机适配器正在向主活动加载多个页面/片段。