Comment enregistrer spinner et éditer du texte sur le stockage interne et le passer à une autre activité

Question

J'essaie de collecter des entrées utilisateur dans une vue de texte d'édition et un spinner et enregistrer les valeurs dans le stockage interne, puis passer à une autre vue, mais mon activité se bloque après avoir cliqué sur mon bouton de sauvegarde, j'apprécierais que quelqu'un puisse regarder mes codes et me dire ce que je fais de mal.

Mes coordonnées utilisateur d'activité sauver

public class PasswordKeeperActivity extends Activity implements AdapterView.OnItemSelectedListener { 

// initialise 
EditText username, password, note; 
Button save, reset; 
public String savedata = Environment.getExternalStorageDirectory().toString(); 

String[] countryNames={"Google", "Yahoo", "Facebook", "Twitter", "Instagram", "BBM", "Skype", "Other"}; 
int flags[] = {R.drawable.google, R.drawable.yahoo, R.drawable.facebook, R.drawable.twitter, R.drawable.instagram, R.drawable.bbm, R.drawable.skype, R.drawable.other}; 

private static final int REQUEST_EXTERNAL_STORAGE = 1; 
private static String[] PERMISSIONS_STORAGE = { 
     Manifest.permission.READ_EXTERNAL_STORAGE, 
     Manifest.permission.WRITE_EXTERNAL_STORAGE 
}; 
// for inflating the menu 
public boolean onCreateOptionsMenu(Menu menu) { 
    MenuInflater inflater = getMenuInflater(); 
    inflater.inflate(R.menu.menu, menu); 
    return true; 
} 

// on selection of the menu 
@Override 
public boolean onOptionsItemSelected(MenuItem item) { 
    // Handle item selection 
    switch (item.getItemId()) { 
    case R.id.view_passwords: 
     Intent intent = new Intent(this, PasswordView.class); 
     startActivity(intent); 
     return true; 

    default: 
     return super.onOptionsItemSelected(item); 
    } 
} 

public void onItemSelected(AdapterView<?> parent, View view, 
          int pos, long id) { 
    // An item was selected. You can retrieve the selected item using 
    // parent.getItemAtPosition(pos) 

} 

public void onNothingSelected(AdapterView<?> parent) { 
    // Another interface callback 
} 

public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_home); 

    initialise(); 

    //Getting the instance of Spinner and applying OnItemSelectedListener on 
    it 
    Spinner spin = (Spinner) findViewById(R.id.planets_spinner); 
    spin.setOnItemSelectedListener(this); 

    CustomAdapter customAdapter = new CustomAdapter(getApplicationContext(), 
    flags, countryNames); 
    spin.setAdapter(customAdapter); 

    //to set the site Edit Text to get the focus 




    // save the data to the textfile 
    save.setOnClickListener(new OnClickListener() { 
     public void onClick(View v) { 

      // creates hidden directory if not existing 
      File dir = new File(getCacheDir(), "/sk/"); 
      if (!dir.exists()) { 
       dir.mkdirs(); 
      } 

      // saving data part 
      String sFileName = getCacheDir() + "/sk/logp.csv"; 
      try { 
       FileWriter writer = new FileWriter(sFileName, true); 

       String countryNames, sUser, sPass, sAdd; 

       countryNames = 
       sUser = username.getText().toString(); 
       sPass = password.getText().toString(); 
       sAdd = note.getText().toString(); 



       if ((sUser.equals("")) && (sPass.equals("")) && 
     (sAdd.equals(""))) { 
        Toast.makeText(getBaseContext(), "Please Enter At least 
     one Field", 
          Toast.LENGTH_SHORT).show(); 

       } else { 
        if (sUser.equals("")) 
         sUser = "null"; 
        if (sPass.equals("")) 
         sPass = "null"; 
        if (sAdd.equals("")) 
         sAdd = "null"; 


        // encrypting the passwords before saving 
        SimpleCrypto mcrypt = new SimpleCrypto(); 
        sPass = SimpleCrypto.bytesToHex(mcrypt.encrypt(sPass)); 
        //sPass = SimpleCrypto.encrypt("fugly", sPass); 




        writer.append(sUser); 
        writer.append(','); 

        writer.append(sPass); 
        writer.append(','); 
        writer.append(sAdd); 

        writer.append('\n'); 

        // generate whatever data you want 

        writer.flush(); 
        writer.close(); 

        Toast.makeText(getBaseContext(), "Password Saved!", 
          Toast.LENGTH_SHORT).show(); 

        Intent intent = new Intent(PasswordKeeperActivity.this, 
     PasswordView.class); 
        String[] myStrings = new String[] {"Google", "Yahoo", 
     "Facebook", "Twitter", "Instagram", "BBM", "Skype", "Other"}; 
        int logo[] = new int[] {R.drawable.google, 
     R.drawable.yahoo, R.drawable.facebook, R.drawable.twitter, 
     R.drawable.instagram, 
     R.drawable.bbm, R.drawable.skype, R.drawable.other}; 
        intent.putExtra("strings", myStrings); 
        intent.putExtra("logos", logo); 
        startActivity(intent); 
       } 

      } catch (Exception e) { 
       Toast.makeText(getBaseContext(), e.getMessage(), 
         Toast.LENGTH_SHORT).show(); 
      } 

     } 
    }); 

    // Reset 
    reset.setOnClickListener(new OnClickListener() { 
     public void onClick(View v) { 

      countryNames.equals("Google"); 
      note.setText(""); 
      username.setText(""); 
      password.setText(""); 
      Toast.makeText(getBaseContext(), "Field(s) Cleared!", 
        Toast.LENGTH_SHORT).show(); 
     } 
    }); 

} 



public void initialise() { 


    username = (EditText) findViewById(R.id.input_name); 
    password = (EditText) findViewById(R.id.input_email); 
    note = (EditText) findViewById(R.id.input_password); 

    save = (Button) findViewById(R.id.buttonSave); 
    reset = (Button) findViewById(R.id.ButtonReset); 
} 

/** 
* Checks if the app has permission to write to device storage 
* 
* If the app does not has permission then the user will be prompted to 
grant permissions 
* 
* @param activity 
*/ 
public static void verifyStoragePermissions(Activity activity) { 
    // Check if we have write permission 
    int permission = ActivityCompat.checkSelfPermission(activity, 
    Manifest.permission.WRITE_EXTERNAL_STORAGE); 

    if (permission != PackageManager.PERMISSION_GRANTED) { 
     // We don't have permission so prompt the user 
     ActivityCompat.requestPermissions(
       activity, 
       PERMISSIONS_STORAGE, 
       REQUEST_EXTERNAL_STORAGE 
     ); 
    } 
} 
} 

mon journal

08-15 10:02:44.353 5961-5961/com.com.dreacot.dreacot.fingerprint E/AndroidRuntime: FATAL EXCEPTION: main 
                       Process: com.com.dreacot.dreacot.fingerprint, PID: 5961 
                       java.lang.NullPointerException: Attempt to read from null array 
                        at com.dreacot.fortpasswordkeeper.CustomListAdapter.getView(CustomListAdapter.java:35) 
                        at android.widget.AbsListView.obtainView(AbsListView.java:2929) 
                        at android.widget.ListView.measureHeightOfChildren(ListView.java:1305) 
                        at android.widget.ListView.onMeasure(ListView.java:1212) 
                        at android.view.View.measure(View.java:20151) 
                        at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:716) 
                        at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:462) 
                        at android.view.View.measure(View.java:20151) 
                        at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6330) 
                        at android.support.design.widget.CoordinatorLayout.onMeasureChild(CoordinatorLayout.java:714) 
                        at android.support.design.widget.HeaderScrollingViewBehavior.onMeasureChild(HeaderScrollingViewBehavior.java:90) 
                        at android.support.design.widget.AppBarLayout$ScrollingViewBehavior.onMeasureChild(AppBarLayout.java:1391) 
                        at android.support.design.widget.CoordinatorLayout.onMeasure(CoordinatorLayout.java:784) 
                        at android.view.View.measure(View.java:20151) 
                        at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6330) 
                        at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) 
                        at android.view.View.measure(View.java:20151) 
                        at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6330) 
                        at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1464) 
                        at android.widget.LinearLayout.measureVertical(LinearLayout.java:747) 
                        at android.widget.LinearLayout.onMeasure(LinearLayout.java:629) 
                        at android.view.View.measure(View.java:20151) 
                        at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6330) 
                        at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) 
                        at com.android.internal.policy.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:3158) 
                        at android.view.View.measure(View.java:20151) 
                        at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2594) 
                        at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1549) 
                        at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1841) 
                        at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1437) 
                        at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7397) 
                        at android.view.Choreographer$CallbackRecord.run(Choreographer.java:920) 
                        at android.view.Choreographer.doCallbacks(Choreographer.java:695) 
                        at android.view.Choreographer.doFrame(Choreographer.java:631) 
                        at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:906) 
                        at android.os.Handler.handleCallback(Handler.java:739) 
                        at android.os.Handler.dispatchMessage(Handler.java:95) 
                        at android.os.Looper.loop(Looper.java:158) 
                        at android.app.ActivityThread.main(ActivityThread.java:7224) 
                        at java.lang.reflect.Method.invoke(Native Method) 
                        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230) 
                        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120) 

alors mon adaptateur liste personnalisée

public class CustomListAdapter extends ArrayAdapter<String> { 

private final Activity context; 
private final String[] countryNames; 
private final int flags[]; 

public CustomListAdapter(Activity context, String[] countryNames, int flags[]) { 
    super(context, R.layout.mylist, countryNames); 
    // TODO Auto-generated constructor stub 

    this.context=context; 
    this.countryNames=countryNames; 
    this.flags=flags; 
} 

public View getView(int position,View view,ViewGroup parent) { 
    LayoutInflater inflater=context.getLayoutInflater(); 
    View rowView=inflater.inflate(R.layout.mylist, null,true); 

    TextView txtTitle = (TextView) rowView.findViewById(R.id.item); 
    ImageView imageView = (ImageView) rowView.findViewById(R.id.icon); 
    TextView extratxt = (TextView) rowView.findViewById(R.id.textView1); 

    txtTitle.setText(countryNames[position]); 
    imageView.setImageResource(flags[position]); 
    extratxt.setText("Description "+countryNames[position]); 
    return rowView; 

} 
} 

modifier

la vue du mot de passe

ListView list; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.viewpass); 

    Intent intent = getIntent(); 
    final String[] myStrings = intent.getStringArrayExtra("strings"); 
    int logo[] = intent.getIntArrayExtra("logo"); 
    CustomListAdapter adapter=new CustomListAdapter(this, myStrings, logo); 
    list=(ListView)findViewById(R.id.list); 
    list.setAdapter(adapter); 

    list.setOnItemClickListener(new OnItemClickListener() { 

     @Override 
     public void onItemClick(AdapterView<?> parent, View view, 
           int position, long id) { 
      // TODO Auto-generated method stub 
      String Slecteditem= myStrings[+position]; 
      Toast.makeText(getApplicationContext(), Slecteditem, Toast.LENGTH_SHORT).show(); 

     } 
    }); 
} 
} 

Answer 1

Vous manquez épeler votre clé pour obtenir votre valeur d'intention.

intent.getIntArrayExtra("logo") 

au lieu de

intent.getIntArrayExtra("logos") 

Pour éviter cela, vous feriez mieux de l'utilisation constante comme:

pubic static final String INTENT_EXTRA_KEY_LOGOS = "logos"