Android 获取不同片段上的EditText值
我正在尝试从不同片段的Android 获取不同片段上的EditText值,android,android-fragments,android-edittext,android-viewpager,android-fragmentactivity,Android,Android Fragments,Android Edittext,Android Viewpager,Android Fragmentactivity,我正在尝试从不同片段的editText中获取一些文本。所以我首先要做的是定义我的mPager和mPagerAdapter: 年度活动 public class a_Atenuacion extends FragmentActivity{ private static final int NUM_PAGES = 3; /** * The pager widget, which handles animation and allows swiping horizontal
editText
中获取一些文本。所以我首先要做的是定义我的mPager
和mPagerAdapter
:
年度活动
public class a_Atenuacion extends FragmentActivity{
private static final int NUM_PAGES = 3;
/**
* The pager widget, which handles animation and allows swiping horizontally to access previous
* and next wizard steps.
*/
private ViewPager mPager;
/**
* The pager adapter, which provides the pages to the view pager widget.
*/
private PagerAdapter mPagerAdapter;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.a_dat_viewpager);
// Instantiate a ViewPager and a PagerAdapter.
mPager = (ViewPager) findViewById(R.id.pager);
mPagerAdapter = new ScreenSlidePagerAdapter(getSupportFragmentManager());
mPager.setAdapter(mPagerAdapter);
}
private class ScreenSlidePagerAdapter extends FragmentStatePagerAdapter {
public ScreenSlidePagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
switch(position){
case 0:
return new a_Dat_Inicio1();
case 1:
return new a_Dat_Inicio2();
case 2:
return new a_Dat_Inicio3();
}
return null;
}
@Override
public int getCount() {
return NUM_PAGES;
}
}
}
然后我得到了我的3个片段类(第一个和第二个版面都有一个editText
,但是第三个版面有一个editText
和一个按钮
)。按钮功能是,当我在最后一个片段(片段3)中时,它以信息形式(不同的editText
)发送到另一个活动
a_Dat_Inicio1片段
public class a_Dat_Inicio1 extends Fragment {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.e("Test", "hello");
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.a_dat_inicio1, container, false);
return view;
}
}
a_Dat_Inicio3片段
public class a_Dat_Inicio3 extends Fragment {
EditText edit3;
EditText edit2;
EditText edit1;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.e("Test", "hello");
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
final View view = inflater.inflate(R.layout.a_dat_inicio3, container, false);
edit1 = (EditText)getActivity().findViewById(R.id.editText1);
final String edit11 = edit1.getText().toString();
edit2 = (EditText)getActivity().findViewById(R.id.editText2);
final String edit22 = edit2.getText().toString();
edit3 = (EditText)view.findViewById(R.id.editText3);
final String edit33 = edit3.getText().toString();
Button but=(Button) view.findViewById(R.id.button);
but.setOnClickListener(new View.OnClickListener(){
public void onClick(View v) {
//Creamos el bundle
Bundle bundle = new Bundle();
//Le ponemos la variable parametro con el contenido (key, valor)
bundle.putString("edit3", edit33);
bundle.putString("edit2", edit22);
bundle.putString("edit1", edit11);
Intent net= new Intent(v.getContext(),Prueba1.class);
net.putExtras(bundle);
startActivity(net);
}
});
return view;
}
}
最后,我在另一个活动(Prueba1.class)上得到了bundle,奇怪的是,我只得到editText1
(在第一个片段上)的结果,其余的都是null
谁能帮我一个忙吗
提前感谢。试试这个:
在第二个片段中,传递intent extras和您的值。例如:
在第二个片段中,执行以下操作:
Intent someintent = new Intent();
//Some first result
someintent.putExtra("your_value_one", your_value_one);
//Some Second result
someintent.putExtra("your_value_two", your_value_two);
//Some third result
someintent.putExtra("your_value_three", your_value_three);
getActivity().setResult(getActivity().RESULT_OK,someintent);
getActivity().finish();
在您的另一个片段中,在您希望得到此结果的地方,对您的另一个片段执行以下操作:
1) 做一些方法来获取信息
private void getInfo() {
//Note: The values are coming from a diff activity or fragment and so the strings should match.
Intent data = new Intent();
String first_value = data.getStringExtra("your_value_one");
String second_value = data.getStringExtra("your_value_two");
String third_value = data.getStringExtra("your_value_three");
Log.i("First Value: ", first_value);
Log.i("First Value: ", second_value);
Log.i("First Value: ", third_value);
}
创建此方法后,只需在onActivityCreated()上调用它
现在,您可以在任何地方使用这些字符串。如果要在其他任何地方使用这些值,请确保在一开始就定义字符串,以便可以在任何地方使用这些值
希望这个答案有帮助:) 最后我得到了一个接口,这是我认为在已经定义的片段上获得soemthing的唯一方法 我的代码如下所示: 首先定义一个接口
public interface OnEditTextChanged {
public void onEditPressed1(String edit1);
public void onEditPressed2(String edit1);
public void onEditPressed3(String edit1);
然后是片段活动:
public class a_Dat_Inicio1 extends Fragment {
EditText edit;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.e("Test", "hello");
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.a_1dat_inicio1, container, false);
init (view);
return view;
}
OnEditTextChanged editListener;
@Override
public void onAttach(Activity activity){
super.onAttach(activity);
try{
editListener=(OnEditTextChanged) getActivity();
}catch(ClassCastException e){
throw new ClassCastException(activity.toString()+"must implemnt onEditPressed");
}
}
private void init(View view) {
edit=(EditText) view.findViewById(R.id.editText1);
//cada vez que se modifique texto llamar
edit.addTextChangedListener(new TextWatcher() {
@Override
public void afterTextChanged(Editable s) {
final String edit11 = edit.getText().toString();
editListener.onEditPressed1(edit11);
}
});
最后,在我们的主要活动中,调用以下方法:
public class a_Atenuacion extends FragmentActivity implements OnEditTextChanged {
String dat1;
String dat2;
String dat3;
private static final int NUM_PAGES = 3;
private PagerAdapter mPagerAdapter;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.a_1dat_viewpager);
// Instantiate a ViewPager and a PagerAdapter.
mPager = (ViewPager) findViewById(R.id.pager);
mPagerAdapter = new ScreenSlidePagerAdapter(getSupportFragmentManager());
mPager.setAdapter(mPagerAdapter);
//HERE DO WHATEVER YOU WANT WITH THE DATA CAUGTH ON THE EDIT 1 METHOD
}
@Override
public void onEditPressed1(String edit1) {
if(mPager.getCurrentItem()==0){
dat1=edit1;
Toast bread = Toast.makeText(getApplicationContext(), "edit1", Toast.LENGTH_LONG);
bread.show();
}
}
希望这能帮助别人
无论如何,谢谢 您可以使用
SharedReferences
确保其余的EditText值在放入捆绑包之前不为null。我确信我检查了它,这没有错:(如何将数据活动发送到片段