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Android button not opening other class

I have problems with buttons.I have made 2 buttons that will when pressed open other activity(class).In code there is no error but when I launch emulator it just doesn't work and isn't opening those classes.
My button's btnopis and btnpronadi don't work(they are not opening other activity(class)).But I have button exit that Works and closes app. I don't get where the problem is. Here is the code
import android.content.Intent;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class MainActivity extends AppCompatActivity{
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
izlaz();
}
public Button btnopis;
public void otvoriopis(){
btnopis=(Button)findViewById(R.id.btnopis);
btnopis.setOnClickListener(new Button.OnClickListener() {
#Override
public void onClick(View v) {
Intent otvoriopis= new Intent(MainActivity.this,Opis.class);
startActivity(otvoriopis);
}
});
}
public Button btnpronadi;
public void otvoripronadi(){
btnpronadi=(Button)findViewById(R.id.btnpronadi);
btnpronadi.setOnClickListener(new Button.OnClickListener() {
#Override
public void onClick(View v) {
Intent otvoripronadi= new Intent(MainActivity.this,Pronadi.class);
startActivity(otvoripronadi);
}
});
}
public Button btnizlaz;
public void izlaz(){
btnizlaz=(Button)findViewById(R.id.btnizlaz);
btnizlaz.setOnClickListener(new Button.OnClickListener() {
#Override
public void onClick(View v) {
finish();
System.exit(0);
}
});
}
}
here is the manifest code:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.shromid">
<application
android:allowBackup="true"
android:icon="#mipmap/app_ikona"
android:roundIcon="#mipmap/app_icon_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".SplashScreen"
android:label="ShromID"
android:screenOrientation="portrait">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".MainActivity"/>
<activity android:name=".Opis" />
<activity android:name=".Pronadi"></activity>
</application>
</manifest>

You forgot do call otvoriopis() and otvoripronadi() at onCreate:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
izlaz();
otvoriopis();
otvoripronadi();
}

You should call your functions in onCreate method, like you did for 'izlaz'

WatchFaces are not configuring

I have created watchface for android wear and my code is as follows:
ComapnionConfigActivity (in mobile module):
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.wearable.Wearable;
public class CompanionConfigActivity extends ActionBarActivity implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {
private GoogleApiClient mGoogleApiClient;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_companion_config);
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addApi(Wearable.API)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
}
#Override
protected void onStart() {
super.onStart();
mGoogleApiClient.connect();
}
#Override
protected void onStop() {
mGoogleApiClient.disconnect();
super.onStop();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_watch_config, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
#Override
public void onConnected(Bundle bundle) {
}
#Override
public void onConnectionSuspended(int i) {
}
#Override
public void onConnectionFailed(ConnectionResult connectionResult) {
}
}
Manifest for mobile module:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.agile.mywatchface" >
<uses-permission android:name="com.google.android.permission.PROVIDE_BACKGROUND" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<application
android:allowBackup="true"
android:icon="#drawable/square"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".CompanionConfigActivity"
android:label="#string/title_activity_watch_config" >
<intent-filter>
<action android:name="com.example.agile.mywatchface.MAIN" />
<category android:name= "com.google.android.wearable.watchface.category.COMPANION_CONFIGURATION" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
</manifest>
MyWatchfaceService: (service in wear module for drawing watchface)
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.os.Bundle;
import android.support.wearable.watchface.CanvasWatchFaceService;
import android.view.SurfaceHolder;
import java.util.Calendar;
import java.util.Timer;
import java.util.TimerTask;
/**
*
* Created by agile on 3/5/2015.
*/
public class MyWatchfaceService extends CanvasWatchFaceService{
Calendar c;
int hrs,min,sec,width,height;
Timer timer;
TimerTask timerTask;
Paint paint;
#Override
public Engine onCreateEngine() {
return new MyEngine();
}
class MyEngine extends CanvasWatchFaceService.Engine {
#Override
public void onCreate(SurfaceHolder holder) {
super.onCreate(holder);
timer = new Timer();
timerTask = new MyTimerTask();
c = Calendar.getInstance();
paint = new Paint();
paint.setColor(Color.BLUE);
paint.setTextSize(18);
}
#Override
public void onPropertiesChanged(Bundle properties) {
super.onPropertiesChanged(properties);
}
#Override
public void onTimeTick() {
super.onTimeTick();
}
#Override
public void onDraw(Canvas canvas, Rect bounds) {
updateTimeOnEachSecond();
width = bounds.width();
height = bounds.height();
canvas.drawText(String.valueOf(hrs)+":"+String.valueOf(min)+":"+String.valueOf(sec),width/2,height/2,paint);
}
#Override
public void onVisibilityChanged(boolean visible) {
super.onVisibilityChanged(visible);
}
}
public void updateTimeOnEachSecond() {
timer.scheduleAtFixedRate(timerTask, 0, 1000);
}
class MyTimerTask extends TimerTask {
public void run(){
hrs = c.get(Calendar.HOUR_OF_DAY);
min = c.get(Calendar.MINUTE);
sec = c.get(Calendar.SECOND);
}
}
}
Manifest for wear module:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.agile.mywatchface" >
<uses-feature android:name="android.hardware.type.watch" />
<uses-permission android:name="com.google.android.permission.PROVIDE_BACKGROUND" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<application
android:allowBackup="true"
android:icon="#drawable/square"
android:label="#string/app_name"
>
<service
android:name=".MyWatchfaceService"
android:label="#string/app_name"
android:permission="android.permission.BIND_WALLPAPER"
android:allowEmbedded="true"
>
<!-- companion configuration activity -->
<meta-data
android:name="android.service.wallpaper"
android:resource="#xml/watch_face" />
<meta-data
android:name="com.example.agile.mywatchface.preview"
android:resource="#drawable/square" />
<meta-data
android:name="com.example.agile.mywatchface.preview_circular"
android:resource="#drawable/square" />
<meta-data
android:name="com.google.android.wearable.watchface.companionConfigurationAction"
android:value="com.example.agile.mywatchface.MAIN" />
<!-- wearable configuration activity -->
<meta-data
android:name="com.google.android.wearable.watchface.wearableConfigurationAction"
android:value="com.example.agile.mywatchface.MAIN" />
<intent-filter>
<action android:name="android.service.wallpaper.WallpaperService" />
<category android:name="com.example.agile.mywatchface.category.WATCH_FACE" />
</intent-filter>
</service>
<activity
android:name=".WearConfigActivity"
android:label="#string/title_activity_wear_config"
android:allowEmbedded="true">
<intent-filter>
<action android:name="com.example.agile.mywatchface.CONFIG_DIGITAL" />
<category android:name=
"com.google.android.wearable.watchface.category.WEARABLE_CONFIGURATION" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
<meta-data
android:name="com.google.android.wearable.watchface.wearableConfigurationAction"
android:value="com.example.agile.mywatchface.MAIN" />
</activity>
</application>
</manifest>
I have followed official guide for creating watchface. But, when I install the app, it isn't showing in companion app. It seems like the problem is in manifest or companionconfigactivity. I tried for more than a day but couldn't identify it. Can anyone help me out?

In your Wearable Manifest you have following line:
<category android:name="com.example.agile.mywatchface.category.WATCH_FACE" />
This is incorrect, you need to use
<category android:name="com.google.android.wearable.watchface.category.WATCH_FACE" />
Android Wear looks for services with this category in the filter, it will ignore yours if you use custom category.

How can I send and retrieve data with parse.com

I wrote that code to send data to parse.com then to receive it also but I can't even send it till now, why ?!! I don't know the main reason, I put the internet and network permission in AndroidManifest.xml the parse class in application also in AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.mkadaimtwo"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="21" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<application
android:name="com.example.mkadaimtwo.ParseCode"
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
and also put the parse class in application also in AndroidManifest.xml and that two codes of class and main Activity
ParseCode class Activity :
package com.example.mkadaimtwo;
import com.parse.Parse;
import android.app.Application;
public class ParseCode extends Application {
public void onCreate() {
Parse.initialize(this, "GIuhlGILKRd8itvCF79femTyReHM6XjVkrfLKm3X", "Fjg4tBrMgl0mY47K4kCL7hVmXhu8FmkE2on9PlXK");
}
}
the MainActivity Code :
package com.example.mkadaimtwo;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.net.ParseException;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.View;
import android.widget.EditText;
import com.parse.GetCallback;
import com.parse.ParseObject;
import com.parse.ParseQuery;
public class MainActivity extends ActionBarActivity {
EditText etCompanyName,etAddress,etNumberOfEmployees,etContactNumber;
ProgressDialog pd,pd2;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
etCompanyName = (EditText) findViewById(R.id.etCompanyName);
etAddress = (EditText) findViewById(R.id.etAddress);
etNumberOfEmployees = (EditText) findViewById(R.id.etNumberOfEmployees);
etContactNumber = (EditText) findViewById(R.id.etContactNumber);
pd = new ProgressDialog(this);
pd.setTitle("wait");
pd.setMessage("by7aml elmafrod");
pd.setProgressStyle(ProgressDialog.STYLE_SPINNER);
pd.setCancelable(true);
pd2 = new ProgressDialog(this);
pd2.setTitle("wait");
pd2.setMessage("by7aml elmafrod");
pd2.setProgressStyle(ProgressDialog.STYLE_SPINNER);
pd2.setCancelable(true);
//here we will Load the old company data from Parse.com
ParseQuery<ParseObject> query = ParseQuery.getQuery("TestBosyApp");
query.getInBackground("ijy1qi78g8", new GetCallback<ParseObject>() {
public void done(ParseObject testBosyApp, ParseException e) {
if (e == null) {
String companyName = testBosyApp.getString("company_name");
String address = testBosyApp.getString("address");
String numberOfEmployees = testBosyApp.getString("number_of_employees");
String contactNumber = testBosyApp.getString("contact_number");
etCompanyName.setText(companyName);
etAddress.setText(address);
etNumberOfEmployees.setText(numberOfEmployees);
etContactNumber.setText(contactNumber);
pd.dismiss();
} else {
AlertDialog.Builder mDialoge = new AlertDialog.Builder(MainActivity.this);
mDialoge.setTitle("Erorr");
mDialoge.setMessage("Check el net plz :)");
mDialoge.setPositiveButton("ok", null);
mDialoge.show();
}
}
#Override
public void done(ParseObject arg0, com.parse.ParseException arg1) {
// TODO Auto-generated method stub
}
});
}
public void update (View V){
pd2.show();
//update data in Parse
ParseQuery<ParseObject> myQuery = ParseQuery.getQuery("TestBosyApp");
// Retrieve the object by id
myQuery.getInBackground("U6Gwn2tiD8", new GetCallback<ParseObject>() {
public void done(ParseObject testBosyApp, ParseException e) {
if (e == null) {
//Initials our variables
String companyName = etCompanyName.getText().toString().trim();
String address = etAddress.getText().toString().trim();
String numberOfEmployees = etNumberOfEmployees.getText().toString().trim();
String contactNumber = etContactNumber.getText().toString().trim();
//update it with new data
testBosyApp.put("company_name", companyName);
testBosyApp.put("address", address);
testBosyApp.put("number_of_employees", numberOfEmployees);
testBosyApp.put("contact_number", contactNumber);
testBosyApp.saveInBackground();
pd2.dismiss();
AlertDialog.Builder mDialoge = new AlertDialog.Builder(MainActivity.this);
mDialoge.setTitle("2shta");
mDialoge.setMessage("Keda eldata ra7t t2riban");
mDialoge.setPositiveButton("cool", null);
mDialoge.show();
}else{
pd2.dismiss();
AlertDialog.Builder mDialoge = new AlertDialog.Builder(MainActivity.this);
mDialoge.setTitle("Erorr");
mDialoge.setMessage("Check el net plz :)");
mDialoge.setPositiveButton("ok", null);
mDialoge.show();
}
}
#Override
public void done(ParseObject arg0, com.parse.ParseException arg1) {
// TODO Auto-generated method stub
}
});
}
}
so what's the problem, progress-bar is loading without end and if I give progress-bar cancellation feature then put data in fields there's nothing happen .
plus if anyone have tutorials for use android with parse.com please provide me with it.

Dude.. Sir? goto parse.com, there are tutorials.. you need to enable something i just do not remember Go to settings ->App Permissions ->Allow client class creation. Set it to ON> before you can send push from device and receive it.. also your manifest is not complete.. from what i know..
<application
android:name="com.example.mkadaimtwo.ParseCode"
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
//edit started here
<service android:name="com.parse.PushService" />
<receiver android:name="com.parse.ParseBroadcastReceiver" >
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<action android:name="android.intent.action.USER_PRESENT" />
</intent-filter>
</receiver>
</application>
so copy and paste this manifest

unable to instantiate activity

Probably it is just a silly mistake but i am having a Instantiate activity message when i tried to run my second activity
My first activity :
package com.burak.algonder;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends Activity {
#Override
public void onCreate (Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button b= (Button) findViewById(R.id.but2);
b.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Toast toast = Toast.makeText(getBaseContext(), "opucuk!", Toast.LENGTH_LONG);
toast.show();
startActivity(new Intent(MainActivity.this, Pozsyon.class));
}
});
}
}
My second Activity:
package com.burak.algonder;
import java.util.List;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.os.IBinder;
public class Pozsyon extends Service implements LocationListener {
private double[] getGPS() {
LocationManager lm = (LocationManager) getSystemService(
Context.LOCATION_SERVICE);
List<String> providers = lm.getProviders(true);
Location l = null;
for (int i=providers.size()-1; i>=0; i--) {
l = lm.getLastKnownLocation(providers.get(i));
if (l != null) break;
}
double[] gps = new double[2];
if (l != null) {
gps[0] = l.getLatitude();
gps[1] = l.getLongitude();
}
return gps;
}
#Override
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
#Override
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
#Override
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
#Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}
}
My Android Manifest file:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.burak.algonder"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="19" />
<uses-permission android:name="android.permission.RECEIVE_SMS"></uses-permission>
<uses-permission android:name="android.permission.READ_SMS" />
<uses-permission android:name="android.permission.SEND_SMS"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.burak.algonder.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.burak.algonder.Pozsyon" >
<intent-filter>
<action android:name="android.intent.action.Pozsyon" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<receiver android:name="com.burak.algonder.SmsReceiver" >
<intent-filter>
<action android:name="android.provider.Telephony.SMS_RECEIVED" />
</intent-filter>
</receiver>
</application>
</manifest>
Thank you for your help.

Pozsyon Class is not Activity and can't be started here!

android - exception when trying to open the front camera

i am unable to get the the front facing camera (camera id 1). open cam #1 failed appears on screen when i try to run the following code.
enclosed a snippet. any help will be appreciated (i am trying it on nexus 4).
Tester.java
package com.example.cam;
import java.util.HashMap;
import java.util.Iterator;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.pm.PackageManager;
import android.hardware.Camera;
import android.os.Bundle;
import android.view.Menu;
import android.widget.Toast;
public class Tester extends Activity {
private static final int[] camIds = { Camera.CameraInfo.CAMERA_FACING_BACK, Camera.CameraInfo.CAMERA_FACING_FRONT };
#SuppressLint("UseSparseArrays")
private final HashMap<Integer, Camera> camMap = new HashMap<Integer, Camera>();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
return true;
}
#Override
protected void onResume() {
super.onResume();
if (!checkCameraHardware())
finish();
getCameras();
releaseCamera();
}
#Override
protected void onPause() {
super.onPause();
releaseCamera();
}
#Override
protected void onStop() {
super.onStop();
releaseCamera();
}
#Override
protected void onDestroy() {
super.onDestroy();
releaseCamera();
}
private final void doToast(final String message) {
Toast.makeText(this, message, Toast.LENGTH_SHORT).show();
}
private final void getCameras() {
for (int camId : camIds)
try {
camMap.put(camId, Camera.open(camId));
doToast("open cam #" + camId + " succeeded");
} catch (Exception e) {
doToast("open cam #" + camId + " failed");
}
}
private final void releaseCamera() {
final Iterator<Integer> iter = camMap.keySet().iterator();
while (iter.hasNext())
camMap.remove(iter.next()).release();
}
private final boolean checkCameraHardware() {
if (getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA))
return camIds.length <= Camera.getNumberOfCameras();
else
return false;
}
}
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.cam"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="19"
android:targetSdkVersion="19" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.CAPTURE_AUDIO_OUTPUT" />
<uses-permission android:name="android.permission.CAPTURE_SECURE_VIDEO_OUTPUT" />
<uses-permission android:name="android.permission.CAPTURE_VIDEO_OUTPUT" />
<uses-permission android:name="android.permission.FLASHLIGHT" />
<uses-feature
android:name="android.hardware.camera"
android:required="true" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.cam.Tester"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>