I want to use navigation drawer and Tabhost together without using any external library is that possible?
I have tried using external library of Sherlock Fragment however, i am getting issues with other things.
FragmentTab1.java
public class FragmentTab1 extends SherlockFragment {
Button postAd, browse;
EditText discription;
EditText price;
String discriptionText;
String priceText;
String adTypetext;
RadioGroup adType;
RadioButton buy;
RadioButton sell;
Bitmap bitmap;
ProgressDialog dialog;
String encodedImage;
String userid;
TextView msgLength;
JSONArray AdsArray = null;
String TAG_ID = "id";
String TAG_IMAGE = "image";
String TAG_TYPE = "adType";
String TAG_DISCRIPTION = "description";
String TAG_PRICE = "price";
ListView lv;
ArrayList<HashMap<String, String>> adList;
private static final int PICK_IMAGE = 1;
@SuppressLint("NewApi")
@TargetApi(Build.VERSION_CODES.GINGERBREAD)
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragmenttab1, container, false);
if (android.os.Build.VERSION.SDK_INT > 9) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
.permitAll().build();
StrictMode.setThreadPolicy(policy);
}
postAd = (Button) getView().findViewById(R.id.bpostAd);
discription = (EditText)getView().findViewById(R.id.etDiscription);
price = (EditText)getView().findViewById(R.id.etPrice);
final RadioGroup adType = (RadioGroup)getView().findViewById(R.id.radioGroup);
RadioButton buy = (RadioButton)getView().findViewById(R.id.rbBuy);
RadioButton sell = (RadioButton)getView().findViewById(R.id.rbSell);
browse = (Button)getView().findViewById(R.id.bBrowse);
msgLength = (TextView)getView().findViewById(R.id.tvLength);
lv = (ListView)getView().findViewById(R.id.listView1);
SharedPreferences mPrefs = getActivity().getSharedPreferences("IDvalue", 0);
userid = mPrefs.getString("userIdKey", null);
adList = new ArrayList<HashMap<String, String>>();
new LoadMyAds().execute();
TextWatcher txwatcher = new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before,
int count) {
// TODO Auto-generated method stub
int length = s.length();
int remaining = 140 - length;
msgLength.setText(String.valueOf(remaining));
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
}
};
discription.addTextChangedListener(txwatcher);
postAd.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
discriptionText = discription.getText().toString();
priceText = price.getText().toString();
int selectedRbId = adType.getCheckedRadioButtonId();
if (selectedRbId == R.id.rbBuy) {
adTypetext = "Buying";
}
if (selectedRbId == R.id.rbSell) {
adTypetext = "Selling";
}
if (bitmap == null) {
Toast.makeText(getActivity().getApplicationContext(),
"Please select image", Toast.LENGTH_SHORT).show();
} else {
new ImageUploadTask().execute();
UserFunctions userFunction = new UserFunctions();
JSONObject json = userFunction.postAd(encodedImage,
discriptionText, adTypetext, priceText, userid);
try {
if (json.getString("status") != null) {
String res = json.getString("status");
if (Integer.parseInt(res) == 1) {
Toast.makeText(getActivity().getApplicationContext(),
"Ad has been posted", Toast.LENGTH_LONG)
.show();
} else {
Toast.makeText(getActivity().getApplicationContext(),
"posting error", Toast.LENGTH_LONG)
.show();
}
}
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
}
});
browse.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
try {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(
Intent.createChooser(intent, "Select Picture"),
PICK_IMAGE);
} catch (Exception e) {
Toast.makeText(getActivity().getApplicationContext(), "error",
Toast.LENGTH_LONG).show();
Log.e(e.getClass().getName(), e.getMessage(), e);
}
}
});
return rootView;
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
switch (requestCode) {
case PICK_IMAGE:
if (resultCode == Activity.RESULT_OK) {
Uri selectedImageUri = data.getData();
String filePath = null;
try {
// OI FILE Manager
String filemanagerstring = selectedImageUri.getPath();
// MEDIA GALLERY
String selectedImagePath = getPath(selectedImageUri);
if (selectedImagePath != null) {
filePath = selectedImagePath;
} else if (filemanagerstring != null) {
filePath = filemanagerstring;
} else {
Toast.makeText(getActivity().getApplicationContext(), "Unknown path",
Toast.LENGTH_LONG).show();
Log.e("Bitmap", "Unknown path");
}
if (filePath != null) {
decodeFile(filePath);
} else {
bitmap = null;
}
} catch (Exception e) {
Toast.makeText(getActivity().getApplicationContext(), "Internal error",
Toast.LENGTH_LONG).show();
Log.e(e.getClass().getName(), e.getMessage(), e);
}
}
break;
default:
}
}
public String getPath(Uri uri) {
String[] projection = { MediaStore.Images.Media.DATA };
@SuppressWarnings("deprecation")
Cursor cursor = getActivity().managedQuery(uri, projection, null, null, null);
if (cursor != null) {
// HERE YOU WILL GET A NULLPOINTER IF CURSOR IS NULL
// THIS CAN BE, IF YOU USED OI FILE MANAGER FOR PICKING THE MEDIA
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
} else
return null;
}
public void decodeFile(String filePath) {
// Decode image size
BitmapFactory.Options o = new BitmapFactory.Options();
o.inJustDecodeBounds = true;
BitmapFactory.decodeFile(filePath, o);
// The new size we want to scale to
final int REQUIRED_SIZE = 1024;
// Find the correct scale value. It should be the power of 2.
int width_tmp = o.outWidth, height_tmp = o.outHeight;
int scale = 1;
while (true) {
if (width_tmp < REQUIRED_SIZE && height_tmp < REQUIRED_SIZE)
break;
width_tmp /= 2;
height_tmp /= 2;
scale *= 2;
}
// Decode with inSampleSize
BitmapFactory.Options o2 = new BitmapFactory.Options();
o2.inSampleSize = scale;
bitmap = BitmapFactory.decodeFile(filePath, o2);
Log.e("Decodefile", "bitmap set");
// imgView.setImageBitmap(bitmap);
}
class ImageUploadTask extends AsyncTask<Void, Void, String> {
@Override
protected String doInBackground(Void... params) {
// TODO Auto-generated method stub
ByteArrayOutputStream bos = new ByteArrayOutputStream();
bitmap.compress(CompressFormat.JPEG, 100, bos);
byte[] data = bos.toByteArray();
// encodedImage = new String(data);
encodedImage = Base64.encodeToString(data, Base64.DEFAULT);
return encodedImage;
}
}
class LoadMyAds extends AsyncTask<Void, Void, String> {
@Override
protected String doInBackground(Void... params) {
// TODO Auto-generated method stub
UserFunctions userFunction = new UserFunctions();
String type = "MyAds";
JSONObject json = userFunction.myAds(userid, type);
try {
if (json.getString("status") != null) {
String res = json.getString("status");
if (Integer.parseInt(res) == 1) {
AdsArray = json.getJSONArray("adsArray");
for (int i = 0; i < AdsArray.length(); i++) {
JSONObject c = AdsArray.getJSONObject(i);
String id = c.getString(TAG_ID);
String adType = c.getString(TAG_TYPE);
String description = c.getString(TAG_DISCRIPTION);
String price = c.getString(TAG_PRICE);
String image = c.getString(TAG_IMAGE);
HashMap<String, String> map = new HashMap<String, String>();
map.put(TAG_ID, id);
map.put(TAG_IMAGE, image);
map.put(TAG_TYPE, adType);
map.put(TAG_DISCRIPTION, description);
map.put(TAG_PRICE, price);
adList.add(map);
}
} else {
Toast.makeText(getActivity().getApplicationContext(),
"parsing error", Toast.LENGTH_LONG).show();
}
}
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(String result) {
// TODO Auto-generated method stub
//image parameter need to be added
ListAdapter adapter = new SimpleAdapter(getActivity(), adList, R.layout.ad_list_item , new String[] { TAG_DISCRIPTION, TAG_PRICE} , new int[] { R.id.title, R.id.price});
lv.setAdapter(adapter);
}
}
}
LogCat output:
12-29 23:42:09.819: E/AndroidRuntime(1061): FATAL EXCEPTION: main
12-29 23:42:09.819: E/AndroidRuntime(1061): java.lang.NullPointerException
12-29 23:42:09.819: E/AndroidRuntime(1061): at com.backslash.myadds.FragmentTab1.onCreateView(FragmentTab1.java:86)
12-29 23:42:09.819: E/AndroidRuntime(1061): at android.support.v4.app.Fragment.performCreateView(Fragment.java:1460)
12-29 23:42:09.819: E/AndroidRuntime(1061): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:911)
12-29 23:42:09.819: E/AndroidRuntime(1061): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1088)
12-29 23:42:09.819: E/AndroidRuntime(1061): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
12-29 23:42:09.819: E/AndroidRuntime(1061): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1444)
12-29 23:42:09.819: E/AndroidRuntime(1061): at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:461)
12-29 23:42:09.819: E/AndroidRuntime(1061): at android.support.v4.app.FragmentTabHost.onAttachedToWindow(FragmentTabHost.java:279)
12-29 23:42:09.819: E/AndroidRuntime(1061): at android.view.View.dispatchAttachedToWindow(View.java:12125)
12-29 23:42:09.819: E/AndroidRuntime(1061): at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2453)
12-29 23:42:09.819: E/AndroidRuntime(1061): at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2460)
12-29 23:42:09.819: E/AndroidRuntime(1061): at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2460)
12-29 23:42:09.819: E/AndroidRuntime(1061): at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2460)
12-29 23:42:09.819: E/AndroidRuntime(1061): at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2460)
12-29 23:42:09.819: E/AndroidRuntime(1061): at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2460)
12-29 23:42:09.819: E/AndroidRuntime(1061): at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2460)
12-29 23:42:09.819: E/AndroidRuntime(1061): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1207)
12-29 23:42:09.819: E/AndroidRuntime(1061): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1004)
12-29 23:42:09.819: E/AndroidRuntime(1061): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5481)
12-29 23:42:09.819: E/AndroidRuntime(1061): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749)
12-29 23:42:09.819: E/AndroidRuntime(1061): at android.view.Choreographer.doCallbacks(Choreographer.java:562)
12-29 23:42:09.819: E/AndroidRuntime(1061): at android.view.Choreographer.doFrame(Choreographer.java:532)
12-29 23:42:09.819: E/AndroidRuntime(1061): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735)
12-29 23:42:09.819: E/AndroidRuntime(1061): at android.os.Handler.handleCallback(Handler.java:730)
12-29 23:42:09.819: E/AndroidRuntime(1061): at android.os.Handler.dispatchMessage(Handler.java:92)
12-29 23:42:09.819: E/AndroidRuntime(1061): at android.os.Looper.loop(Looper.java:137)
12-29 23:42:09.819: E/AndroidRuntime(1061): at android.app.ActivityThread.main(ActivityThread.java:5103)
12-29 23:42:09.819: E/AndroidRuntime(1061): at java.lang.reflect.Method.invokeNative(Native Method)
12-29 23:42:09.819: E/AndroidRuntime(1061): at java.lang.reflect.Method.invoke(Method.java:525)
12-29 23:42:09.819: E/AndroidRuntime(1061): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
12-29 23:42:09.819: E/AndroidRuntime(1061): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
12-29 23:42:09.819: E/AndroidRuntime(1061): at dalvik.system.NativeStart.main(Native Method)
You are getting a big fat NullPointerException 'cause you are calling getView() before the actual view of the fragment is created. So, in onCreateView() there is no way for you to find the view by id.
The solution to this problem is to try using rootview.findViewById() rather than getView().findViewById().
Also, have you noticed that, you've inflate the rootview, done nothing to it, and then return it. So, just using it to find views and bind all the listeners to buttons or so.
Well, as for the issue for the image, that's caused by your own implementation in the onActivityResult() method. And I don't know how your app works in detail, so I'll just post my code of implementing something analogous here.
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
Uri uri = data.getData();
ContentResolver cr = this.getContentResolver();
try {
Bitmap bitmap = BitmapFactory.decodeStream(cr.openInputStream(uri));
imageView = (ImageView) findViewById(R.id.image);
imageView.setImageBitmap(bitmap);
} catch (FileNotFoundException e) {
Log.e("Exception", e.getMessage(), e);
}
}
super.onActivityResult(requestCode, resultCode, data);
}
Should work fine, I think.