Android Open Source - Lapses Scale Fragment

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Back to project page Lapses.

License

The source code is released under:

GNU General Public License

Java Source Code

package com.franmelado.lapses;
// ww w . java 2s .  co m
import android.app.*;
import android.content.*;
import android.os.*;
import android.view.*;
import android.widget.*;
import android.widget.SeekBar.*;

public class ScaleFragment extends DialogFragment {
    ScaleFragmentListener mCallback;
  
  int scale;
  SeekBar seekbarScale;
  TextView scaleValue;

    public interface ScaleFragmentListener {
        void onScaleFragmentSelected(int scale);
    }

    public ScaleFragment() {
        // Empty constructor required for DialogFragment
    }

  @Override
  public void onAttach(Activity activity) {
        super.onAttach(activity);
        
        // This makes sure that the container activity has implemented
        // the callback interface. If not, it throws  an exception.
        try {
            mCallback = (ScaleFragmentListener) activity;
        } catch (ClassCastException e) {
            throw new ClassCastException(activity.toString()
                    + " must implement OnHeadlineSelectedListener");
        }
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {

        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
    LayoutInflater inflater = getActivity().getLayoutInflater();
    View scaleview = inflater.inflate(R.layout.fragment_scale, null);
    builder.setTitle(R.string.scale)
            .setView(scaleview)
            .setPositiveButton(R.string.hide, new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialogInterface, int i) {
                    dismiss();
                }
            });
    
    // Initialization of Scale
        seekbarScale = (SeekBar) scaleview.findViewById(R.id.sbScale);
    scaleValue = (TextView) scaleview.findViewById(R.id.tvScaleValue2);
    // Retrieve saved scale value, default=2
    final SharedPreferences sharedPref = getActivity().getPreferences(Context.MODE_PRIVATE);
    scale = sharedPref.getInt("com.franmelado.lapses.scale", 2);
    // Seekbar values: 0-29, text values: 1-30. It's the same with the other seekbars.
    seekbarScale.setProgress(scale - 1);
    scaleValue.setText("max. " + scale + " h");
    
    // Handle changes on Scale
    seekbarScale.setOnSeekBarChangeListener( new OnSeekBarChangeListener() {

        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
          scale = progress + 1;
            scaleValue.setText ("max. " + scale + " h");
          mCallback.onScaleFragmentSelected(scale); // Sends scale value to the activity
        }

        public void onStopTrackingTouch(SeekBar seekBar) {
          // Save scale value in preferences
        SharedPreferences.Editor editor = sharedPref.edit();
            editor.putInt("com.franmelado.lapses.scale", scale);
            editor.commit();
        }

        public void onStartTrackingTouch(SeekBar seekBar) {
        }
    });

        return builder.create();
    }
}

Java Source Code List

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