Android Open Source - UnitConverterUltimate-Studio Conversion Fragment

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License

The source code is released under:

GNU General Public License

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Java Source Code

package com.physphil.android.unitconverterultimate.ui;
/*w w w . jav  a  2  s .  c  o m*/
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.RadioButton;

import com.physphil.android.unitconverterultimate.util.Constants;
import com.physphil.android.unitconverterultimate.util.Convert;
import com.physphil.android.unitconverterultimate.util.Util;


public class ConversionFragment extends Fragment{
  
//  private Activity activity;
  private int fragmentLayout;
  private String fromButtonTag;
  private String toButtonTag;
  private int fromButtonsId;
  private int toButtonsId;
  private boolean isTemperature;
  private boolean justCreated;
    private RadioButton mFromButton;
    private RadioButton mToButton;
  
  public ConversionFragment() {}
  
  @Override
  public void onCreate(Bundle savedInstanceState){
    super.onCreate(savedInstanceState);
    
    //Define arguments which will customize fragment to specific conversion required
    fragmentLayout = getArguments().getInt(Constants.FRAGMENT_LAYOUT);
    fromButtonTag = getArguments().getString(Constants.FRAGMENT_FROM_BUTTON_TAG);
    toButtonTag = getArguments().getString(Constants.FRAGMENT_TO_BUTTON_TAG);
    fromButtonsId = getArguments().getInt(Constants.FRAGMENT_FROM_BUTTONS_ID);
    toButtonsId = getArguments().getInt(Constants.FRAGMENT_TO_BUTTONS_ID);
    isTemperature = getArguments().getBoolean(Constants.FRAGMENT_IS_TEMPERATURE);
    
    //Set justCreated to true, as fragment was just created
    justCreated = true;
  }

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){
    //Inflate appropriate layout based on selected conversion
        View v = inflater.inflate(fragmentLayout, container, false);

        int fromId = Util.getButtonState(getActivity(), fromButtonTag);
        if(fromId != 0) {
            mFromButton = (RadioButton) v.findViewById(fromId);
        }

        int toId = Util.getButtonState(getActivity(), toButtonTag);
        if(toId != 0){
            mToButton = (RadioButton) v.findViewById(toId);
        }

        return v;
  }
  
  @Override
  public void onResume(){
    super.onResume();
    
    //Restore state of radio buttons from previous use. If no values are stored, defaults from the fragment layout will be used
//    int fromId = Util.getButtonState(getActivity(), fromButtonTag);
//    if(fromId != 0){
//      RadioButton fromButton = (RadioButton) activity.findViewById(fromId);
        if(mFromButton != null){
      mFromButton.setChecked(true);
    }
    
//    int toId = Util.getButtonState(getActivity(), toButtonTag);
//    if(toId != 0){
        if(mToButton != null){
      mToButton.setChecked(true);
    }
    
    //Add check changed listeners to radio button groups to convert when a new unit is selected
    Util.addCheckChangedListeners(getActivity(), fromButtonsId, toButtonsId, isTemperature);

    //If fragment was just created, and it's visible to user, call conversion.
    //This was added to handle case where views are created by viewpager after they are selected by drawerListener, usually on app open
    if(justCreated && getUserVisibleHint()){
      
      justCreated = false;
      
      if(isTemperature){
        Convert.convertTempValue(getActivity());
      }
      else{
        Util.onFragmentVisible(getActivity(), fromButtonsId, toButtonsId);
      }
    }
  }

  @Override
  public void onPause(){
    super.onPause();
    
    //Save state of radio buttons for next use
    Util.setButtonState(getActivity(), fromButtonsId, toButtonsId, fromButtonTag, toButtonTag);
  }
  
}

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