Android Discussion Boards

System Back Button

How is this related to FIFO or LIFO? The back buttons can be somehow confusing, as hardware and logical buttons have a different effect on the transition.

Logical back would take you to the parent activity.
Hardware back would take you to the currently previous activity.

So, it would be worth handling both of them in your code. Then loading the activity, with the previous state or from ground up. Read the following two guides to learn more about "proper navigation":

The sh*t I complain about
It's like there ain't a cloud in the sky and it's raining out - Eminem
~! Firewall !~

I want to draw horizontal dashed lines programmatically between programmatically generated TextViews. I found this code on Internet:

Paint fgPaintSel = new Paint();
fgPaintSel.setARGB(255, 0, 0, 0);
fgPaintSel.setStyle(Paint.Style.STROKE);
fgPaintSel.setPathEffect(new DashPathEffect(new float[]{5, 10}, 0));

I just copied and pasted this code but nothing happened. What should I do to draw a dashed line? Thanks.

jasonalien wrote:

I just copied and pasted this code...

Where to?

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"You can easily judge the character of a man by how he treats those who can do nothing for him." - James D. Miles

You need to add the code to do the actual drawing of the line. It would be better to study the documentation[^] rather than copying code from random places on the internet.

How to access the file system (SD Card files) of Master device to client devices for file accessing via bluetooth like Bluetooth file transfer application in play store?
please help

It had been a negative response until now, and it will be a no unless you start something yourself!

Start here and read the documentation, then learn how to use the protocols to work with Bluetooth connections and devices, http://developer.android.com/guide/topics/connectivity/bluetooth.html[^]

The sh*t I complain about
It's like there ain't a cloud in the sky and it's raining out - Eminem
~! Firewall !~

Member 12208230 wrote:
How to access the file system (SD Card files)...

Check out the Environment class.

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"You can easily judge the character of a man by how he treats those who can do nothing for him." - James D. Miles

Need code to send message to paired device from master device via bluetooth?
will you please help

Something like:

BluetoothSocket btSocket;
...
OutputStream outStream = btSocket.getOutputStream();
outStream.write("message");

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"You can easily judge the character of a man by how he treats those who can do nothing for him." - James D. Miles

how to stream audio/video file between android devices via bluetooth and master device have the control to stop,pause or resume the video it should be reflected in client devices

Have you looked into BluetoothAdapter and BluetoothSocket?

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"You can easily judge the character of a man by how he treats those who can do nothing for him." - James D. Miles

Android Studio not working config path error, tried editing the codes idea.properties in the user files it wont work

Member 12187790 wrote:
it wont work

That is like telephoning the garage and saying "my car doesn't go".

Instead of adding nonsense, can you contribute a solution please. Thanks

Solution to what? All you have told us is "it will not work", which, as I said before, is no use at all. I suggest you read http://www.codeproject.com/Forums/13695/Mobile.aspx[^] and edit your original post to a properly detailed question.

Member 12187790 wrote:
...config path error...

Is that supposed to be helpful in diagnosing the problem?

Member 12187790 wrote:
tried editing the codes idea.properties...

From what, and to what?

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"You can easily judge the character of a man by how he treats those who can do nothing for him." - James D. Miles

I have a class-1 and in that class layout, i have a fragmentLayout.
While passing values from class-2 to class-1, OnCreate is calling, in that, SetContentView calling and first raising fragment in the layout and the coming back to class-1 OnCreate and executing remaining.
Now the problem is, i am not able to pass values from class-1 to fragment.
can any one tell me the solution...
thanks in advance

Tirumaleswara Reddy.K wrote:
Now the problem is, i am not able to pass values from class-1 to fragment.
can any one tell me the solution...

Does class-1 own the fragment? In class-1's onCreate() method, do you have something like:

// Create the detail fragment and add it to the activity using a fragment transaction.
Bundle arguments = new Bundle();
Values v = (Values) getIntent().getSerializableExtra(MyFragment.ARG_ITEM_ID);
arguments.putSerializable(MyFragment.ARG_ITEM_ID, v);
MyFragment fragment = new MyFragment();
fragment.setArguments(arguments);
getFragmentManager().beginTransaction().add(R.id.thread_detail_container, fragment).commit();

You can more easily see how to do this very thing by looking at the Master/Detail sample project.

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"You can easily judge the character of a man by how he treats those who can do nothing for him." - James D. Miles

Want learn more new to this

how to add .PNG image layer on active camera
urgent......

Why?

Adding a PNG images on camera would kill the purpose of having a camera at all. Camera preview needs to be showing the current image capturing in the device.

Did you mean to add a layer on the camera preview? If so, please read this thread: http://stackoverflow.com/questions/7466336/android-overlay-on-android-camera-preview[^]

The sh*t I complain about
It's like there ain't a cloud in the sky and it's raining out - Eminem
~! Firewall !~

package com.lingme.anand.lingme.Activity.Fragments;

import android.app.ProgressDialog;
import android.content.Intent;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;

import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.VolleyLog;
import com.android.volley.toolbox.JsonObjectRequest;
import com.android.volley.toolbox.Volley;
import com.lingme.anand.lingme.Activity.Adapters.NecklaceRecyclerAdapter;
import com.lingme.anand.lingme.Activity.Adapters.PopularRecyclerAdapter;
import com.lingme.anand.lingme.Activity.DetailsActivity;
import com.lingme.anand.lingme.Activity.Listeners.EndlessRecyclerOnScrollListener;
import com.lingme.anand.lingme.Activity.Listeners.EndlessScroller;
import com.lingme.anand.lingme.Activity.Listeners.OnItemSelectedListener;
import com.lingme.anand.lingme.Activity.Pojo.HomePopular;
import com.lingme.anand.lingme.Activity.Pojo.ListProduct;
import com.lingme.anand.lingme.R;

import org.json.JSONArray;
import org.json.JSONObject;

import java.util.ArrayList;
import java.util.List;

/**
* Created by nepal on 18/11/2015.
*/
public class DisplayingFragment extends Fragment implements OnItemSelectedListener {
private ConnectivityManager connectivityManager;
private NetworkInfo networkInfo;
private RecyclerView recyclerView;
private String dbname;
private ImageView imageView;
private FragmentManager fragmentManager;
private FragmentTransaction fragmentTransaction;
private NecklaceRecyclerAdapter necklaceRecyclerAdapter;
private List<listproduct> listProducts = new ArrayList<listproduct>();
private ProgressDialog progressDialog;

int count = 2;

@Nullable
@Override
public View onCreateView(LayoutInflater inflater, final ViewGroup container, Bundle savedInstanceState) {
connectivityManager = (ConnectivityManager) getActivity().getSystemService(getActivity().CONNECTIVITY_SERVICE);
networkInfo = connectivityManager.getActiveNetworkInfo();
View view;
if (networkInfo != null && networkInfo.isConnected()) {
view = inflater.inflate(R.layout.list_product, container, false);
dbname = getArguments().getString("dbname");
recyclerView = (RecyclerView) view.findViewById(R.id.recycler_list_product);
final LinearLayoutManager layoutManager = new GridLayoutManager(getActivity(), 3);
layoutManager.setOrientation(LinearLayoutManager.VERTICAL);
recyclerView.setLayoutManager(layoutManager);

updateList(dbname);

recyclerView.addOnScrollListener(new EndlessRecyclerOnScrollListener(layoutManager) {
@Override
public void onLoadMore(int page) {
int lastFirstVisiblePosition = ((LinearLayoutManager) recyclerView.getLayoutManager()).findFirstVisibleItemPosition();
((LinearLayoutManager) recyclerView.getLayoutManager()).scrollToPosition(lastFirstVisiblePosition);
loadMore(count);
}
});

} else {
view = inflater.inflate(R.layout.fragment_connection, container, false);
imageView = (ImageView) view.findViewById(R.id.refresh);
imageView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
fragmentManager = getActivity().getSupportFragmentManager();
fragmentTransaction = fragmentManager.beginTransaction();
DisplayingFragment fragment = new DisplayingFragment();
fragmentTransaction.replace(R.id.fragments, fragment, DisplayingFragment.class.getName());
fragmentTransaction.commit();
}
});
}
return view;
}

public void updateList(final String dbname) {

String wholeUrl = "http://wwwgyaampe.com/lingme/list.php?table=" + dbname + "&page=1";

necklaceRecyclerAdapter = new NecklaceRecyclerAdapter(getActivity(), listProducts, this);
recyclerView.setAdapter(necklaceRecyclerAdapter);

RequestQueue queue = Volley.newRequestQueue(getActivity());

necklaceRecyclerAdapter.clearAdapter();

showPd();

JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.GET, wholeUrl, null, new Response.Listener<jsonobject>() {

@Override
public void onResponse(JSONObject response) {

Log.d("hi", response.toString());
hidePD();

try {
JSONArray results = response.getJSONArray("home");

for (int i = 0; i < results.length(); i++) {

JSONObject post = results.getJSONObject(i);

ListProduct item = new ListProduct();
String img = post.getString("image_path");
System.out.println(img);
item.setImage_path("http://wwwgyaampe.com/img/" + dbname + img);
item.setPrice(Integer.parseInt(post.getString("price")));
item.setName(post.getString("name"));
listProducts.add(item);

}
} catch (Exception e) {
e.printStackTrace();
}
necklaceRecyclerAdapter.notifyDataSetChanged();
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
// VolleyLog.d(TAG, "Error" + error.getMessage());
hidePD();
}
});

queue.add(jsonObjectRequest);
}

public void loadMore(int page) {
String url = "http://wwwgyaampe.com/lingme/list.php?" + "page=" + page + "&table=" + dbname;

necklaceRecyclerAdapter = new NecklaceRecyclerAdapter(getActivity(), listProducts, this);
recyclerView.setAdapter(necklaceRecyclerAdapter);

RequestQueue queue = Volley.newRequestQueue(getActivity());
necklaceRecyclerAdapter.clearAdapter();
showPd();

JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.GET, url, null, new Response.Listener<jsonobject>() {

@Override
public void onResponse(JSONObject response) {

hidePD();

try {

JSONArray home = response.getJSONArray("home");
for (int i = 0; i < home.length(); i++) {

JSONObject post = home.getJSONObject(i);

ListProduct h = new ListProduct();
String img = post.getString("image_path");
h.setImage_path("http://wwwgyaampe.com/img/" + dbname + img);
h.setName(post.getString("name"));
h.setId(Integer.parseInt(post.getString("id")));
h.setPrice(Integer.parseInt(post.getString("price")));
h.setDiscout(Integer.parseInt(post.getString("discount")));
listProducts.add(h);

}
} catch (Exception e) {
e.printStackTrace();
}
necklaceRecyclerAdapter.notifyDataSetChanged();
count = count + 1;
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
hidePD();
}
});

queue.add(jsonObjectRequest);
}

public void showPd() {
if (progressDialog == null) {
progressDialog = new ProgressDialog(getActivity());
progressDialog.setMessage("Loading...");
progressDialog.setCancelable(false);
progressDialog.setCanceledOnTouchOutside(false);
progressDialog.show();
}
}

public void hidePD() {
if (progressDialog != null) {
progressDialog.dismiss();
progressDialog = null;
}
}

@Override
public void onItemSelected(int itemId) {
Intent in = new Intent(getActivity(), DetailsActivity.class);
in.putExtra("id", listProducts.get(itemId).getId());
in.putExtra("table", dbname);
startActivity(in);
}
}

I know the compiler does not care, but why do you write code with everthing left-justified? Do you find it easier to read? In addition, a lot of the code you've shown is completely irrelevant to the matter at hand (e.g., showPd, hidePD, onItemSelected, all of the import statements).

Why should the fragment display something? Have you stepped through the code (using the debugger) to see if it is executing the way you'd expect?

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"You can easily judge the character of a man by how he treats those who can do nothing for him." - James D. Miles

I'm trying to display gif images on Android. This is my code to display a.gif :

WebView wView = new WebView(this);
wView.loadUrl("android.resource://" + getPackageName() + "/" + R.drawable.a);
setContentView(wView);

But I get this :

The webpage at android.resource://com.example.mypc.myapp/2497475928917
could not be loaded because :
net::ERR_UNKNOWN_URL_SCHEME

My gif files are in drawable and raw folder under res folder. Can you tell me how to give paths of gifs correctly? Thanks in advance.