将数据从活动传递到选项卡式布局片段?
我有两个活动。一个是普通的包含listview的Activity,第二个是Tabbed Layout,它有两个选项卡。一个是“描述”选项卡,另一个是“示例代码”选项卡。将数据从活动传递到选项卡式布局片段?
我已经为每个“OneFragment”和“TwoFragment”创建了两个单独的片段。我需要的是当用户从我的正常活动中点击一个项目时,这个项目将被存储在字符串中,并且该字符串应该被传递给选项卡式布局,并且它应该在OneFragment中显示,即“Description”选项卡
)。我的列表包含{“Android”,“Studio”}如果用户点击Android,这个文本应该传递到描述标签并使用TextView显示文本。请帮帮我。在这里,我有我的各个代码..
NormalActivity - > ListActi.java
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_list);
lv = (ListView) findViewById(R.id.listView);
final List<String> ListElementsArrayList = new ArrayList<String>(Arrays.asList(listElements));
final ArrayAdapter<String> adapter = new ArrayAdapter<String>
(getApplicationContext(), android.R.layout.simple_list_item_1, ListElementsArrayList);
lv.setAdapter(adapter);
lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//Toast.makeText(getApplicationContext(), listElements[position],Toast.LENGTH_LONG).show();
s = listElements[position];
if(position == 1){
s = listElements[position];
Bundle bundle = new Bundle();
bundle.putString("ClickedItem", listElements[position]);
OneFragment fragobj = new OneFragment();
TwoFragment fag = new TwoFragment();
fragobj.setArguments(bundle);
fag.setArguments(bundle);
Intent i = new Intent(getApplicationContext(),BothLay.class);
startActivity(i);
}
}
});
}
}
TabActivity - > BothLay
public class BothLay extends AppCompatActivity {
private Toolbar toolbar;
private TabLayout tabLayout;
private ViewPager viewPager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_both_lay);
viewPager = (ViewPager) findViewById(R.id.viewpager);
setupViewPager(viewPager);
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
}
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFragment(new OneFragment(), "Description");
adapter.addFragment(new TwoFragment(), "Sample Code");
viewPager.setAdapter(adapter);
}
class ViewPagerAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public ViewPagerAdapter(FragmentManager manager) {
super(manager);
}
@Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
@Override
public int getCount(){
return mFragmentList.size();
}
public void addFragment(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
@Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
}
能解密选项卡 - > OneFragment(所有我需要将正常活动的数据传递给此片段)
public class OneFragment extends Fragment{
String strtext = "Ajay";
public OneFragment() {
// Required empty public constructor
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootview = inflater.inflate(R.layout.fragment_one, container, false);
TextView textView = (TextView) rootview.findViewById(R.id.t1);
//strtext = getIntent().getStringExtra("ClickedItem"); //this doesn't work
textView.setText(strtext);
return rootview;
}
}
示例代码选项卡 - > Twofragment
public class TwoFragment extends Fragment{
public TwoFragment() {
// Required empty public constructor
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_two, container, false);
}
}
这里:
fragobj.setArguments(bundle);
fag.setArguments(bundle);
上点击按钮不起作用,因为目前开始BothLay
活动,而不是添加片段FragmentManager
的。
得到它的工作:
通行证捆绑使用意向BothLay
Acivity上点击按钮的:
Intent i = new Intent(getApplicationContext(),BothLay.class);
i.putExtras(bundle);
startActivity(i);
2.从意向在BothLay
活动onCreate
然后获取捆绑在拨打adapter.addFragment
方法时将它传递给Fragment's:
Bundle bundle = getIntent().getExtras();
tabLayout.setupWithViewPager(viewPager,bundle);
通行证捆绑到碎片的物体:
private void setupViewPager(ViewPager viewPager,Bundle bundle) {
...
Fragment fragmentOne=new OneFragment();
fragmentOne.setArguments(bundle);
adapter.addFragment(fragmentOne, "Description");
// do same for second Framgment
}
编辑:
要片段呼叫片段的onCreateView
获取数据getArguments
方法:
Bundle bundle=getArguments();
if(bundle!=null){
if(bundle.containsKey("ClickedItem")){
String strClickedItem=bundle.getString("ClickedItem");
}
}
难道这是我提供的所有步骤链接。
第四步需要在你的片段恢复时执行。
下面的代码将在您的活动,
SelectedBundle selectedBundle;
终于你会得到selectedBundle片段的实例。
因此,您可以轻松地将值传递给片段。像,
fragment.setData(String passedData);
就是这样。
谢谢@Ahamed –
检查我的答案http://*.com/questions/12739909/send-data-from-activity-to-fragment-in-android/38741476#38741476 – Noorul
需要帮助的手段,问我。 – Noorul
@Er Ajay Jayendran首先结束一个句子,你只需要一个句号。当你发布一个问题时,考虑一下格式,当它很杂乱时,人们不会读它,甚至 –