IconTextTabsActivity.java
public class IconTextTabsActivity extends AppCompatActivity {
private Toolbar toolbar;
private TabLayout tabLayout;
private ViewPager viewPager;
private int[] tabIcons = {
R.drawable.ic_tab_favourite,
R.drawable.ic_tab_call,
R.drawable.ic_tab_contacts
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_icon_text_tabs);
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
viewPager = (ViewPager) findViewById(R.id.viewpager);
setupViewPager(viewPager);
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
setupTabIcons();
}
private void setupTabIcons() {
tabLayout.getTabAt(0).setIcon(tabIcons[0]);
tabLayout.getTabAt(1).setIcon(tabIcons[1]);
tabLayout.getTabAt(2).setIcon(tabIcons[2]);
}
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFrag(new OneFragment(), "ONE");
adapter.addFrag(new TwoFragment(), "TWO");
adapter.addFrag(new ThreeFragment(), "THREE");
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 addFrag(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
@Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
}
OneFragment.java
public class OneFragment extends Fragment implements SwipeRefreshLayout.OnRefreshListener{
private static final String TAG = PatientList.class.getSimpleName();
// initially offset will be 0, later will be updated while parsing the json
private int offSet = 0;
// Movies json url
private static final String url = "http://192.168.0.102/test/apps.php";
private ProgressDialog pDialog;
private List<Patient> patientList = new ArrayList<Patient>();
private ListView listView;
private CustomListAdapter listadapter;
private SwipeRefreshLayout swipeRefreshLayout;
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) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.patientlist_listview, container, false);
listView = (ListView) view.findViewById(R.id.list);
swipeRefreshLayout = (SwipeRefreshLayout) view.findViewById(R.id.swipe_refresh_layout);
listadapter = new CustomListAdapter(this, patientList);
listView.setAdapter(listadapter);
pDialog = new ProgressDialog(this);
// Showing progress dialog before making http request
pDialog.setMessage("Loading...");
pDialog.show();
// changing action bar color
// getActionBar().setBackgroundDrawable(
// new ColorDrawable(Color.parseColor("#00BBD3")));
swipeRefreshLayout.setOnRefreshListener(this);
/**
* Showing Swipe Refresh animation on activity create
* As animation won't start on onCreate, post runnable is used
*/
swipeRefreshLayout.post(new Runnable() {
@Override
public void run() {
swipeRefreshLayout.setRefreshing(true);
fetchPatients();
}
}
);
listView.setAdapter(listadapter);
// Click event for single list row
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(IconTextTabsActivity.this, "row " + position + " was pressed", Toast.LENGTH_LONG).show();
switch (position) {
case 0:
TextView c =(TextView)view.findViewById(R.id.title);
String item = c.getText().toString();
Log.d("id", item);
break;
case 1:
break;
}
}
});
return view;
}
/**
* This method is called when swipe refresh is pulled down
*/
@Override
public void onRefresh() {
fetchPatients();
}
/**
* Fetching movies json by making http call
*/
private void fetchPatients() {
// showing refresh animation before making http call
swipeRefreshLayout.setRefreshing(true);
// appending offset to url
//String url = URL_TOP_250 + offSet;
// Creating volley request obj
JsonArrayRequest movieReq = new JsonArrayRequest(url,
new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray response) {
Log.d(TAG, response.toString());
hidePDialog();
Log.d("id", "hi") ;
// Parsing json
// reset the list
patientList.clear();
listadapter.notifyDataSetChanged();
for (int i = 0; i < response.length();i++) {
try {
Log.d("id","hi1") ;
Log.d("i","i:"+i);
Patient patient = new Patient();
Log.d("length", "length:" + response.length());
JSONObject objid= response.getJSONObject(i);
//get id
patient.setTitle(objid.getString("id"));
//Log.d("i","i:"+i);
//obj= response.getJSONObject(i+1);
//get image url second item
JSONObject objimage= response.getJSONObject(++i);
patient.setThumbnailUrl(objimage.getString("image"));
//Log.d("i","i:"+i);
//patient.setTitle(obj.getString("id"));
//patient.setThumbnailUrl(obj.getString("image"));
// Log.d("id",obj.getString("id")) ;
// Log.d("image",obj.getString("image")) ;
/*movie.setRating(((Number) obj.get("rating"))
.doubleValue());
movie.setYear(obj.getInt("releaseYear"));
// Genre is json array
JSONArray genreArry = obj.getJSONArray("genre");
ArrayList<String> genre = new ArrayList<String>();
for (int j = 0; j < genreArry.length(); j++) {
genre.add((String) genreArry.get(j));
}
movie.setGenre(genre);
*/
// adding movie to movies array
if(i%2==1)
patientList.add(patient);
// updating offset value to highest value
//if (i >= offSet)
// offSet = i;
} catch (JSONException e) {
e.printStackTrace();
}
}
// notifying list adapter about data changes
// so that it renders the list view with updated data
listadapter.notifyDataSetChanged();
// stopping swipe refresh
swipeRefreshLayout.setRefreshing(false);
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d(TAG, "Error: " + error.getMessage());
hidePDialog();
Toast.makeText(view.getApplicationContext(), error.getMessage(), Toast.LENGTH_LONG).show();
// stopping swipe refresh
swipeRefreshLayout.setRefreshing(false);
}
});
// Adding request to request queue
AppController.getInstance().addToRequestQueue(movieReq);
}
@Override
public void onDestroy() {
super.onDestroy();
hidePDialog();
}
private void hidePDialog() {
if (pDialog != null) {
pDialog.dismiss();
pDialog = null;
}
}
//public PatientList() {
//Required empty public constructor
//}
}
错误消息
Error:(75, 38) error: incompatible types: OneFragment cannot be converted to Context
Error:(72, 45) error: incompatible types: OneFragment cannot be converted to Activity
Error:(223, 32) error: cannot find symbol variable view
Error:(106, 52) error: not an enclosing class: IconTextTabsActivity
我想将列表视图和tab活动与json合并。但是，它会在以下4行中得到错误，我不知道如何解决它。
listadapter = new CustomListAdapter(this, patientList);
pDialog = new ProgressDialog(this);
Toast.makeText(IconTextTabsActivity.this, "row " + position + " was pressed", Toast.LENGTH_LONG).show();
public PatientList() {
//Required empty public constructor
}
请给我一些帮助来解决这个问题。谢谢。
答案 0 :(得分：0)
//打开您的Main Activity并从TabActivity扩展该类。
public class AndroidTabAndListView extends TabActivity
//现在在res下打开main.xml - ＆gt;布局文件夹并创建一个tabview。
//为选项卡创建活动并从ListActivity扩展类
public class Activity extends ListActivity
//为列表视图创建xml布局。
//每个标签可能都需要一个图标，因此每个标签都有设计图标。