Android Spinner Populating Using Arraylist

im to populate spinner using arraylist , and that arraylist actully holds data from the file having android application data stored already for t=my application, im pasting the co

Solution 1:

Try to initialize your spinner adapter with array in constructor.

String[] wee = list2.toArray(newString[list2.size()]);
final String[] str={"Report 1","Report 2","Report 3","Report 4","Report 5"};
ArrayAdapter<String> spinnerArrayAdapter = newArrayAdapter<String>(
         this, android.R.layout.simple_spinner_item, wee);
spinnerArrayAdapter.setDropDownViewResource( android.R.layout.simple_spinner_dropdown_item );

// Spinner spinYear = (Spinner)findViewById(R.id.spin);
spin.setAdapter(spinnerArrayAdapter);

Solution 2:

privatevoidsetSpinner() {
    spinner = (Spinner) findViewById(R.id.spinner_size);

    Intent intent = getIntent();

    ArrayList<String> sizes = null;

    if (intent != null) {
      // Receiving ArrayList in Another Activity where "sizeList" is the Key
        sizes = intent.getStringArrayListExtra("SizeList");
    }

    if (sizes != null) {

        ArrayAdapter<String> adapter = newArrayAdapter<String>(this, android.R.layout.simple_spinner_dropdown_item, sizes);

        spinner.setAdapter(adapter);

        // Spinner click listener
        spinner.setOnItemSelectedListener(this);
    }


}

Call setSpinner() method from OnCreate() Method. You can directly pass ArrayList as a parameter, you don't need to convert into String[].