Convert String to Array (android)

问题:

I get a String data from Cursor, but I don't know how to convert it to Array. How can I do that?

String[] mString; for(cursor.moveToFirst(); cursor.moveToNext(); cursor.isAfterLast()) {    mTitleRaw = cursor.getString(cursor.getColumnIndex(SBooksDbAdapter.KEY_TITLE_RAW)); } mString = mTitleRaw ???? 

回答1:

You could just wrap mTitleRaw into a single element array like so:

mString = new String[] { mTitleRaw }; 

Update: What you probably want is to add all the rows to a single array, which you can do with an ArrayList, and mutate back to a String[] array like so:

ArrayList strings = new ArrayList(); for(cursor.moveToFirst(); !cursor.isAfterLast(); cursor.moveToNext()) {    String mTitleRaw = cursor.getString(cursor.getColumnIndex(SBooksDbAdapter.KEY_TITLE_RAW));    strings.add(mTitleRaw); } Sting[] mString = (String[]) strings.toArray(new String[strings.size()]); 

回答2:

As Pentium10 pointed out marshall_law's code has a bug in it. It skips the first element in the cursor. Here is a better solution:

    ArrayList al = new ArrayList();     cursor.moveToFirst();     while(!cursor.isAfterLast()) {         Log.d("", "" + cursor.getString(cursor.getColumnIndex(ProfileDbAdapter.KEY_PROFILE_NAME)));         String mTitleRaw = cursor.getString(cursor.getColumnIndex(ProfileDbAdapter.KEY_ID));         al.add(mTitleRaw);         cursor.moveToNext();     } 

As I said, this code will include the first element in the cursor.

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