the problem is the next I have an activiy and in that activity I have a buttonBar , when I try to pass to fragment by clicking a buttonBar button gives me an error.
This is the code
public class ElectricalCalculators extends AppCompatActivity implements View.OnClickListener {
Button kwbutton , evbutton ;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_electrical_calculators);
findViewById(R.id.menu_back).setOnClickListener(this);
findViewById(R.id.menu_home).setOnClickListener(this);
Button kwbutton = (Button) findViewById(R.id.ampsBoutton);
kwbutton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent( v.getContext() , AmpsConversion.class);
startActivityForResult(intent,0);
}
});
Button evbutton = (Button) findViewById(R.id.evBoutton);
evbutton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent( v.getContext() , ElectronVoltsConversion.class);
startActivityForResult(intent,0);
}
});
Button jbutton = (Button) findViewById(R.id.joulesBoutton);
jbutton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent( v.getContext() , JoulesConversion.class);
startActivityForResult(intent,0);
}
});
Button Kwbutton = (Button) findViewById(R.id.kwBoutton);
Kwbutton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent( v.getContext() , KwConversion.class);
startActivityForResult(intent,0);
}
});
Button Kwhbutton = (Button) findViewById(R.id.kwhBoutton);
Kwhbutton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent( v.getContext() , KwhConversion.class);
startActivityForResult(intent,0);
}
});
}
@Override
public void onClick(View v) {
Class clazz = null;
FragmentManager fragmentManager = getSupportFragmentManager();
if (v.getId() == R.id.menu_back){
fragmentManager.beginTransaction().replace(R.id.elctricalCalculator, new Fragmen2()).commit();
}
/** switch (v.getId()) {
case R.id.menu_back:
//clazz = Fragmen2.class;
fragmentManager.beginTransaction().replace(R.id.elctricalCalculator, new Fragmen2()).commit();
break;
case R.id.menu_home:
clazz = MainActivity.class;
break;
/**case R.id.five_tabs_changing_colors:
clazz = FiveColorChangingTabsActivity.class;
break;*/
//}
// startActivity(new Intent(this, clazz));
}
}
and the error is:
ATAL EXCEPTION: main
Process: com.example.liantonypozo.calculos, PID: 10048
android.content.ActivityNotFoundException: Unable to find explicit activity class {com.example.liantonypozo.calculosmatematicos3/com.example.liantonypozo.calculos.Fragmen2}; have you declared this activity in your AndroidManifest.xml?
at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1805)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1523)
at android.app.Activity.startActivityForResult(Activity.java:4225)
at android.support.v4.app.BaseFragmentActivityJB.startActivityForResult(BaseFragmentActivityJB.java:50)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:79)
at android.app.Activity.startActivityForResult(Activity.java:4183)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:859)
at android.app.Activity.startActivity(Activity.java:4522)
at android.app.Activity.startActivity(Activity.java:4490)
at com.example.liantonypozo.calculosmatematicos3.ElectricalCalculators.onClick(ElectricalCalculators.java:97)
at android.view.View.performClick(View.java:5637)
at android.view.View$PerformClick.run(View.java:22429)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)