Android Open Source - FlashLight Frag_ Screen Flash

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License

The source code is released under:

MIT License

Java Source Code

package com.inches.flashlight;
//from w w w.j  a v  a 2  s .c  o m
import android.support.v4.app.Fragment;
import android.view.*;
import android.os.*;
import android.widget.ToggleButton;
import android.widget.CompoundButton;
import android.widget.SeekBar.*;
import android.widget.AbsoluteLayout;

import android.util.Log;
import android.app.*;
import android.widget.CompoundButton.*;
import android.widget.*;

public class Frag_ScreenFlash extends Fragment
{
  private final static String TAG ="Inches";
  private ToggleButton sFlashController;
  private Window w;
  private WindowManager.LayoutParams p;
  private onScreenFlashStateChangedListener sfChanagedListener;
  
  public interface onScreenFlashStateChangedListener{
    public void onScreenFlashOn();
    public void onScreenFlashOff();
  }
  
  // private final int MAX = 90; // Real Max is 100 (Max+Min)
  private final int MIN = 10;

  @Override
  public void onAttach(Activity activity)
  {
    // TODO: Implement this method
    super.onAttach(activity);  
    sfChanagedListener =(onScreenFlashStateChangedListener) activity;
  }
  

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
  {
    // TODO: Implement this method
    final ViewGroup layout = (ViewGroup) inflater.inflate(R.layout.flash_screen,container,false);
    try{
      
    w=getActivity().getWindow();
    p=w.getAttributes();
      
    final SeekBar brightContoller =(SeekBar) layout.findViewById(R.id.brightController);
    sFlashController =(ToggleButton) layout.findViewById(R.id.sFlashController);
    
      sFlashController.setOnCheckedChangeListener(new OnCheckedChangeListener(){

        @Override
        public void onCheckedChanged(CompoundButton p1, boolean state)
        {
          // TODO: Implement this method
          if(state){
            turnScreenFlashOn(brightContoller.getProgress());
            sfChanagedListener.onScreenFlashOn();
          }
          else{
            Log.i(TAG,"Toggle Off");
            turnScreenFlashOff();
            sfChanagedListener.onScreenFlashOff();
          }
        }  
    });
    
    brightContoller.setOnSeekBarChangeListener( new OnSeekBarChangeListener(){

        @Override
        public void onProgressChanged(SeekBar p1, int p2, boolean p3)
        {
          // TODO: Implement this method
          if(sFlashController.isChecked()){
            turnScreenFlashOn(p2);
          }
        }

        @Override
        public void onStartTrackingTouch(SeekBar p1)
        {
          // TODO: Implement this method
        }

        @Override
        public void onStopTrackingTouch(SeekBar p1)
        {
          // TODO: Implement this method        
        }    
    });
    
    }catch(Exception e){
      e.printStackTrace();
    }return layout;
  }

  @Override
  public void onStop()
  {
    // TODO: Implement this method
    super.onStop();
    sFlashController.setChecked(false);
    turnScreenFlashOff();
  }
    
  private void turnScreenFlashOn(int progress){
    p.screenBrightness=(float) (MIN+progress)/100;
    w.setAttributes(p);
  }
  
  private void turnScreenFlashOff(){
    p.screenBrightness = WindowManager.LayoutParams.BRIGHTNESS_OVERRIDE_NONE;
    w.setAttributes(p);
  }
}

Java Source Code List

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