Error closing Intent.ACTION_VIEW

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I preview an image with Intent.ACTION_VIEW and when closing the following error occurs, I’m guessing it is in Mainactivity.class:

E/AndroidRuntime: FATAL EXCEPTION: main
                  Process: com.emerson.barcellos.mgordenservicopremium, PID: 9168
                  java.lang.RuntimeException: Unable to start activity ComponentInfo{com.emerson.barcellos.mgordenservicopremium/com.emerson.barcellos.mgordenservicopremium.MainActivity}: android.support.v4.app.Fragment$InstantiationException: Unable to instantiate fragment com.emerson.barcellos.mgordenservicopremium.Fragments.AlterarOsFragment: make sure class name exists, is public, and has an empty constructor that is public
                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2790)
                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2855)
                      at android.app.ActivityThread.access$900(ActivityThread.java:181)
                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1474)
                      at android.os.Handler.dispatchMessage(Handler.java:102)
                      at android.os.Looper.loop(Looper.java:145)
                      at android.app.ActivityThread.main(ActivityThread.java:6117)
                      at java.lang.reflect.Method.invoke(Native Method)
                      at java.lang.reflect.Method.invoke(Method.java:372)
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399)
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194)
                   Caused by: android.support.v4.app.Fragment$InstantiationException: Unable to instantiate fragment com.emerson.barcellos.mgordenservicopremium.Fragments.AlterarOsFragment: make sure class name exists, is public, and has an empty constructor that is public
                      at android.support.v4.app.Fragment.instantiate(Fragment.java:446)
                      at android.support.v4.app.FragmentState.instantiate(Fragment.java:108)
                      at android.support.v4.app.FragmentManagerImpl.restoreAllState(FragmentManager.java:2058)
                      at android.support.v4.app.FragmentController.restoreAllState(FragmentController.java:158)
                      at android.support.v4.app.FragmentActivity.onCreate(FragmentActivity.java:328)
                      at android.support.v7.app.AppCompatActivity.onCreate(AppCompatActivity.java:88)
                      at com.emerson.barcellos.mgordenservicopremium.MainActivity.onCreate(MainActivity.java:48)
                      at android.app.Activity.performCreate(Activity.java:6374)
                      at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1119)
                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2743)
                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2855) 
                      at android.app.ActivityThread.access$900(ActivityThread.java:181) 
                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1474) 
                      at android.os.Handler.dispatchMessage(Handler.java:102) 
                      at android.os.Looper.loop(Looper.java:145) 
                      at android.app.ActivityThread.main(ActivityThread.java:6117) 
                      at java.lang.reflect.Method.invoke(Native Method) 
                      at java.lang.reflect.Method.invoke(Method.java:372) 
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399) 
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194) 
                   Caused by: java.lang.InstantiationException: class com.emerson.barcellos.mgordenservicopremium.Fragments.AlterarOsFragment has no zero argument constructor
                      at java.lang.Class.newInstance(Class.java:1641)
                      at android.support.v4.app.Fragment.instantiate(Fragment.java:435)
                      at android.support.v4.app.FragmentState.instantiate(Fragment.java:108) 
                      at android.support.v4.app.FragmentManagerImpl.restoreAllState(FragmentManager.java:2058) 
                      at android.support.v4.app.FragmentController.restoreAllState(FragmentController.java:158) 
                      at android.support.v4.app.FragmentActivity.onCreate(FragmentActivity.java:328) 
                      at android.support.v7.app.AppCompatActivity.onCreate(AppCompatActivity.java:88) 
                      at com.emerson.barcellos.mgordenservicopremium.MainActivity.onCreate(MainActivity.java:48) 
                      at android.app.Activity.performCreate(Activity.java:6374) 
                      at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1119) 
                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2743) 
                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2855) 
                      at android.app.ActivityThread.access$900(ActivityThread.java:181) 
                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1474) 
                      at android.os.Handler.dispatchMessage(Handler.java:102) 
                      at android.os.Looper.loop(Looper.java:145) 
                      at android.app.ActivityThread.main(ActivityThread.java:6117) 
                      at java.lang.reflect.Method.invoke(Native Method) 
                      at java.lang.reflect.Method.invoke(Method.java:372) 
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399) 
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194) 
                   Caused by: java.lang.NoSuchMethodException: <init> []
                      at java.lang.Class.getConstructor(Class.java:531)
                      at java.lang.Class.getDeclaredConstructor(Class.java:510)
                      at java.lang.Class.newInstance(Class.java:1639)
                      at android.support.v4.app.Fragment.instantiate(Fragment.java:435) 
                      at android.support.v4.app.FragmentState.instantiate(Fragment.java:108) 
                      at android.support.v4.app.FragmentManagerImpl.restoreAllState(FragmentManager.java:2058) 
                      at android.support.v4.app.FragmentController.restoreAllState(FragmentController.java:158) 
                      at android.support.v4.app.FragmentActivity.onCreate(FragmentActivity.java:328) 
                      at android.support.v7.app.AppCompatActivity.onCreate(AppCompatActivity.java:88) 
                      at com.emerson.barcellos.mgordenservicopremium.MainActivity.onCreate(MainActivity.java:48) 
                      at android.app.Activity.performCreate(Activity.java:6374) 
                      at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1119) 
                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2743) 
                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2855) 
                      at android.app.ActivityThread.access$900(ActivityThread.java:181) 
                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1474) 
                      at android.os.Handler.dispatchMessage(Handler.java:102) 
                      at android.os.Looper.loop(Looper.java:145) 
                      at android.app.ActivityThread.main(ActivityThread.java:6117) 
                      at java.lang.reflect.Method.invoke(Native Method) 
                      at java.lang.reflect.Method.invoke(Method.java:372) 
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399) 
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194) 

My Fragment.class

...
Intent inte = new Intent(Intent.ACTION_VIEW);
                        inte.setDataAndType(Uri.parse(uri.toString()), "*/*");
                        startActivity(inte);
...

Mainactivity.class

public class MainActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {
    View headerView;
    DrawerLayout drawer;
    FragmentTransaction ft;
    private int id;
    private int RESULT_BARCODE = 3;
    public static DataBaseHandler db;
    final ContentValues values = new ContentValues();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        db = DataBaseHandler.getInstance(this);


/**
 Cursor cursor = db.Select(DataBaseHandler.TABLE_OS, null, null, null, null, null, null, null);
 int index0 = cursor.getColumnIndex(DataBaseHandler.KEY_OS_ID);
 if (cursor.moveToFirst()) {
 do {
 values.clear();
 values.put(DataBaseHandler.KEY_OS_ID_SEQUENCIA, cursor.getString(index0));
 db.Update(DataBaseHandler.TABLE_OS, values, DataBaseHandler.KEY_OS_ID + "=?", new String[]{cursor.getString(index0)});
 Log.v("aviso", cursor.getString(index0));
 }
 while (cursor.moveToNext());
 }**/

        drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
                this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close) {
            @Override
            public void onDrawerClosed(View drawerView) {
                super.onDrawerClosed(drawerView);
                selectedMenu();
            }
        };
        drawer.setDrawerListener(toggle);
        toggle.syncState();

        NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
        navigationView.setNavigationItemSelectedListener(this);

        headerView = navigationView.getHeaderView(0);

        Intent intent = getIntent();
        Bundle bundle = intent.getExtras();
        FragmentTransaction ft = getSupportFragmentManager().beginTransaction();

        if (bundle != null) {
            int numero = bundle.getInt("numero");
            if (numero != 0) {
                ft.replace(R.id.container, new HomeFragment(), "home").addToBackStack("tag_back").commit();
                ft = getSupportFragmentManager().beginTransaction();
                ft.replace(R.id.container, new AlterarOsFragment(bundle.getInt("numero")), "os").addToBackStack("tag_back").commit();

            } else {
                ft.replace(R.id.container, new HomeFragment(), "home").commit();
            }

        } else {
            ft.replace(R.id.container, new HomeFragment(), "home").commit();
        }

        perfil();

    }

    @SuppressWarnings("StatementWithEmptyBody")
    @Override
    public boolean onNavigationItemSelected(MenuItem item) {
        // Handle navigation view item clicks here.
        id = item.getItemId();
        drawer.closeDrawer(GravityCompat.START);
        return true;
    }

    void selectedMenu() {
        Fragment currentFragment = getSupportFragmentManager().findFragmentById(R.id.container);
        ft = getSupportFragmentManager().beginTransaction();
        if (id == R.id.nav_home) {
            if (!currentFragment.getTag().equals("home")) {
                ft.replace(R.id.container, new HomeFragment(), "home");
                ft.addToBackStack("tag_back");
                ft.commit();
            }
        } else if (id == R.id.nav_abrir) {
           // if (Funcoes.idUltimOs()) {
           //     Funcoes.popUpPremium();
           // } else {
                Intent intentA = new Intent(MainActivity.this, AbrirOsActivity.class);
                intentA.putExtra("edit", false);
                intentA.putExtra("numero", 1);
                startActivity(intentA);
                finish();
           // }

        } else if (id == R.id.nav_alterar) {
            new Os(MainActivity.this, 0).popUpIdOs(getSupportFragmentManager());
        } else if (id == R.id.nav_pesuisar) {
            if (!currentFragment.getTag().equals("pesquisar")) {
                ft.replace(R.id.container, new OsListFragment(null, null, false), "pesquisar");
                ft.addToBackStack("tag_back");
                ft.commit();
            }
        } else if (id == R.id.nav_scanner) {
            Intent intent = new Intent(MainActivity.this, BarcodeScanner.class);
            intent.putExtra("tipo", true);
            intent.putExtra("edit", false);
            startActivityForResult(intent, RESULT_BARCODE);
            //  ContentValues values = new ContentValues();
            //  values.put(DataBaseHandler.KEY_OS_GRUPO, "9y8FwQTy");

            // db.Update(DataBaseHandler.TABLE_OS, values, null, null);
            //new AtualizaServerToLocal(getBaseContext(), 1, 2).execute();

        } else if (id == R.id.nav_clientes) {
            if (!currentFragment.getTag().equals("clientes")) {
                ft.replace(R.id.container, new ClientesFragment(), "clientes");
                ft.addToBackStack("tag_back");
                ft.commit();
            }
        }
        /**else if (id == R.id.nav_grupos) {
         if (!currentFragment.getTag().equals("grupos")) {
         ft.replace(R.id.container, new ChartFragment(), "grupos");
         ft.addToBackStack("tag_back");
         ft.commit();
         }
         } **/
        else if (id == R.id.nav_cadastro) {
            if (!currentFragment.getTag().equals("cadastro")) {
                ft.replace(R.id.container, new CadastrosFragment(1), "cadastro");
                ft.addToBackStack("tag_back");
                ft.commit();
            }
        } else if (id == R.id.nav_financeiro) {
            if (!currentFragment.getTag().equals("financeiro")) {
                ft.replace(R.id.container, new FinanceiroFragment(), "financeiro");
                ft.addToBackStack("tag_back");
                ft.commit();
            }
        } else if (id == R.id.nav_configuracao) {
            Intent intent = new Intent(MainActivity.this, ConfiguracaoActivity.class);
            startActivity(intent);
            // this.finish();
        }
    }

    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        if (resultCode == Activity.RESULT_OK) {
            if (requestCode == RESULT_BARCODE) {
                String contents = data.getStringExtra("SCAN_RESULT");
                FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
                ft.replace(R.id.container, new OsListFragment(DataBaseHandler.TABLE_OS + "." + DataBaseHandler.KEY_OS_BARCODE, contents, false), "pesquisa").addToBackStack("tag_back").commit();
            }
        }
    }

    public void perfil() {
        Cursor c = db.Select(DataBaseHandler.TABLE_USER, null, null, null, null, null, null, null);
        if (c.moveToNext()) {
            int iNome = c.getColumnIndex(DataBaseHandler.KEY_USER_NAME);
            int iEmpresa = c.getColumnIndex(DataBaseHandler.KEY_USER_EMPRESA);
            int iFoto = c.getColumnIndex(DataBaseHandler.KEY_USER_FOTO);
            byte[] ft = c.getBlob(iFoto);
            Bitmap bitmap = null;
            if (ft != null) {

                bitmap = BitmapFactory.decodeByteArray(ft, 0, ft.length);

            } else {
                bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.ic_emotion_24dp);
            }

            setUserData(c.getString(iNome), c.getString(iEmpresa), bitmap);
        }
    }

    public void setUserData(String user, String email, Bitmap avatar) {
        ((TextView) headerView.findViewById(R.id.txtUserEmail)).setText(email);
        ((TextView) headerView.findViewById(R.id.txtUsername)).setText(user);
        if (avatar != null)
            ((ImageView) headerView.findViewById(R.id.imgAvatar)).setImageDrawable(new RoundImage(avatar));
    }

}
java android

  • You can publish the full code of your Alterarosfragment?

1 answer

1


By the error he gave, his Alterarosfragment class does not appear to have an empty constructor, which is mandatory for Fragments. And I’m realizing that you try to initialize this class by passing a value on the constructor.

In this post, you have the correct way to initialize a Fragment by passing a value to it without necessarily being by the class constructor. I always use this method:

https://stackoverflow.com/questions/10450348/do-fragments-really-need-an-empty-constructor

  • 1

    Thanks @Márcio Oliveira, it worked for me. this bug was taking my sleep. Thanks anyway.

  • I did as indicated in the link public static AlterarOsFragment newInstance(int numero) {&#xA; AlterarOsFragment f = new AlterarOsFragment();&#xA; Bundle bdl = new Bundle(2);&#xA; bdl.putInt(EXTRA_NUMERO, numero);&#xA; f.setArguments(bdl);&#xA; return f;&#xA; }&#xA;&#xA; @Override&#xA; public void onCreate(Bundle savedInstanceState){&#xA; super.onCreate(savedInstanceState);&#xA; this.numeroOs = getArguments().getInt(EXTRA_NUMERO);&#xA; } i use a menu Drawer ,no longer gives error but always leads me to Fragment defalut, you know why this occurs?

  • Put breakpoints in the code and debug to understand where the app is going through the code.

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