Problems with loading and saving strings from an array

Question

So I've done research on this topic and there are many ways of doing a favorite for a string in an array. There is a favorite button that the user clicks on to favorite that particular displayed string which would be in an array. I've come up with a load array and save array method in this class. I'm getting my errors at loadArray(favorites, this); and saveArray(favorites, "favorites", this); It does not seem to recognize loadArray or saveArray as a method. Thanks so much!

public class Base extends Activity implements OnClickListener {

    Button home, search, moreapps, fav;
    TextView display;
    String [] favorites;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(starting.rt.R.layout.relationship);
        home = (Button) findViewById(starting.rt.R.id.Home);
        search = (Button) findViewById(starting.rt.R.id.search);
        moreapps = (Button) findViewById(starting.rt.R.id.moreapps);
        fav = (Button) findViewById(starting.rt.R.id.fav);
        display = (TextView) findViewById(starting.rt.R.id.tvResults);
        fav.setOnClickListener(new View.OnClickListener() {

        public void onClick(View v) {
                display.getText();
                loadArray(favorites, this);
                favorites = Arrays.copyOf(favorites, favorites.length+1);
                favorites[favorites.length]=display.getText().toString();
                saveArray(favorites, "favorites", this);

            }
        }); 
    }

    public String[] loadArray(String arrayName, Context mContext) {  
        SharedPreferences prefs = mContext.getSharedPreferences("preferencename", 0);  
        int size = prefs.getInt(arrayName + "_size", 0);  
        String array[] = new String[size];  
        for(int i=0;i<size;i++)  
            array[i] = prefs.getString(arrayName + "_" + i, null);  
        return array;  
    }  

    public boolean saveArray(String[] array, String arrayName, Context mContext) {   
        SharedPreferences prefs = mContext.getSharedPreferences("preferencename", 0);  
        SharedPreferences.Editor editor = prefs.edit();  
        editor.putInt(arrayName +"_size", array.length);  
        for(int i=0;i<array.length;i++)  
            editor.putString(arrayName + "_" + i, array[i]);  
        return editor.commit();  
    } 
    public void onClick(View arg0) {
        // TODO Auto-generated method stub

    }
}

score 1 · Accepted Answer · 2013-05-07 17:24:38Z

1

That's because this in that scope is the onClickListener(), you could use Base.this to reference the Activity (Context).

I wouldn't recommend using getApplicationContext(), the documentation saids:

This generally should only be used if you need a Context whose lifecycle is separate from the current context, that is tied to the lifetime of the process rather than the current component.

edited May 7, 2013 at 17:24

answered May 7, 2013 at 17:12

user2355549

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2 Comments

jacobohunter Over a year ago

Worked for SaveArray not load array

user2355549 Over a year ago

You could also remove the Context argument from loadArray() and saveArray() and call getSharedPreferences("preferencename", 0); because they are part of the Activity class which is already a context.

cgalvao1993 · Accepted Answer · 2013-05-07 17:17:58Z

1

You are calling

 loadArray(String[], View.OnClickListener)

instead of

 loadarray(String, Context)

"favorites" is a array of strings, not a string

"this" refers to View.OnclickListener instead of Context

You can get the Context using "getApplicationContext()"

answered May 7, 2013 at 17:17

cgalvao1993

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