Android Open Source - Simplest-Flashlight-App Main Activity

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From Project

Back to project page Simplest-Flashlight-App.

License

The source code is released under:

Apache License

Java Source Code

package com.andrewq.simpleflashlight;
//from  ww  w  . j  av  a2  s.c  o  m
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.hardware.Camera;
import android.hardware.Camera.Parameters;
import android.os.Bundle;
import android.os.Vibrator;
import android.preference.PreferenceManager;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.WindowManager;
import android.widget.RelativeLayout;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.ToggleButton;

public class MainActivity extends Activity {

  private boolean isLightOn = false;
  private Camera camera;
  private ToggleButton button;
  public Vibrator v;
  RelativeLayout mainLayout, flashlightLayout, strobeLayout;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    Log.d("MainActivity.java", "onCreate() was called");
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    v = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
    button = (ToggleButton) findViewById(R.id.buttonFlashlight);

    flashlightLayout = (RelativeLayout) findViewById(R.id.flashlightLayout);
    strobeLayout = (RelativeLayout) findViewById(R.id.strobeLayout);
    mainLayout = (RelativeLayout) findViewById(R.id.mainLayout);

    final Context context = this;
    PackageManager pm = context.getPackageManager();

    if (!pm.hasSystemFeature(PackageManager.FEATURE_CAMERA)) {
      v.vibrate(100);
      new AlertDialog.Builder(this)
          .setTitle("Sorry")
          .setMessage(
              "It appears that your device is incompatible with this app. Sorry for the inconvenience.")
          .setNeutralButton("Close",
              new DialogInterface.OnClickListener() {

                @Override
                public void onClick(DialogInterface arg0,
                    int arg1) {
                  finish();
                }
              }).show();
      return;
    }

    if (camera == null) {
      camera = Camera.open();
    }

    final Parameters p = camera.getParameters();

    // Use the OnSwipeTouchListener class to define gestures and their
    // actions
    // TODO: the `flashlightLayout` and `strobeLayout` OnTouchListeners must
    // match
    flashlightLayout.setOnTouchListener(new OnSwipeTouchListener() {
      public void onSwipeTop() {

      }

      public void onSwipeRight() {

        strobeLayout.setVisibility(View.VISIBLE);
        flashlightLayout.setVisibility(View.GONE);

      }

      public void onSwipeLeft() {

      }

      public void onSwipeBottom() {

      }
    });

    // Use the OnSwipeTouchListener class to define gestures and their
    // actions
    // TODO: the `flashlightLayout` and `strobeLayout` OnTouchListeners must
    // match
    strobeLayout.setOnTouchListener(new OnSwipeTouchListener() {
      public void onSwipeTop() {

      }

      public void onSwipeRight() {

        strobeLayout.setVisibility(View.GONE);
        flashlightLayout.setVisibility(View.VISIBLE);

      }

      public void onSwipeLeft() {

      }

      public void onSwipeBottom() {

      }
    });

    button.setOnClickListener(new OnClickListener() {

      @Override
      public void onClick(View arg0) {

        if (isLightOn) {

          Toast.makeText(context, "Light off!", Toast.LENGTH_SHORT)
              .show();
          v.vibrate(40);
          p.setFlashMode(Parameters.FLASH_MODE_OFF);
          camera.setParameters(p);
          camera.stopPreview();
          isLightOn = false;

        } else {

          Toast.makeText(context, "Light on!", Toast.LENGTH_SHORT)
              .show();
          v.vibrate(40);
          p.setFlashMode(Parameters.FLASH_MODE_TORCH);
          camera.setParameters(p);
          camera.startPreview();
          isLightOn = true;

        }

      }
    });
    
    strobeSetup();

  }

  @Override
  public void onWindowFocusChanged(boolean hasFocus) {
    TextView strobeTv1;
    SeekBar skbr1;
    SharedPreferences getPrefs = PreferenceManager
        .getDefaultSharedPreferences(getBaseContext());
    boolean box = getPrefs.getBoolean("pref_brightness", true);
    if (box == true) {
      WindowManager.LayoutParams lp = getWindow().getAttributes();
      lp.screenBrightness = 100 / 100.0f;
      getWindow().setAttributes(lp);
    } else {
      WindowManager.LayoutParams lp = getWindow().getAttributes();
      lp.screenBrightness = -1;
      getWindow().setAttributes(lp);
    }

    boolean box2 = getPrefs.getBoolean("pref_strobe_speed", false);
    if (box2 == true) {

      strobeTv1 = (TextView) findViewById(R.id.strobe_tv2);
      skbr1 = (SeekBar) findViewById(R.id.strobe_adjust);

      strobeTv1.setVisibility(View.VISIBLE);
      skbr1.setVisibility(View.VISIBLE);
    } else {
      strobeTv1 = (TextView) findViewById(R.id.strobe_tv2);
      skbr1 = (SeekBar) findViewById(R.id.strobe_adjust);

      strobeTv1.setVisibility(View.GONE);
      skbr1.setVisibility(View.GONE);
    }

    super.onWindowFocusChanged(hasFocus);
  }

  @Override
  protected void onPause() {
    Log.d("MainActivity.java", "onPause() was called");
    super.onPause();

    if (camera != null) {
      camera.release();
      camera = null;
    }
  }

  @Override
  protected void onStop() {
    Log.d("MainActivity.java", "onStop() was called");
    super.onStop();

    if (camera != null) {
      camera.release();
    }
  }

  protected void onDestroy() {
    Log.d("MainActivity.java", "onDestroy() was called");
    super.onDestroy();

    if (camera != null) {
      camera.release();
      camera = null;
    }

  }

  @Override
  public void onResume() {
    Log.d("MainActivity.java", "onResume() was called");
    super.onResume();

    if (camera == null) {
      camera = Camera.open();
    }
  }

  /** Menu inflater Method */
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    Log.d("MainActivity.java", "onCreateOptionsMenu() was called");
    getMenuInflater().inflate(R.menu.menu, menu);
    return true;
  }

  /** Called when the user clicks a menu button */
  public boolean onOptionsItemSelected(MenuItem item) {
    Log.d("MainActivity.java", "onOptionsItemSelected() was called");
    super.onOptionsItemSelected(item);
    switch (item.getItemId()) {
    case R.id.about:
      aboutMenuItem();
      break;
    case R.id.settings:
      Intent intent = new Intent(getApplicationContext(), Settings.class);
      startActivity(intent);
      break;
    }
    return super.onOptionsItemSelected(item);
  }
  
  private void strobeSetup() {
    @SuppressWarnings("unused")
    SeekBar seekbar1;    
    seekbar1 = (SeekBar) findViewById(R.id.strobe_adjust);
    
    //need help with rest of code...
  }

  private void aboutMenuItem() {
    new AlertDialog.Builder(this)
        .setTitle("About the Developer")
        .setMessage(
            "Welcome to the simplest flashlight app on Google Play!"
                + "\n"
                + "This application toggles your LED light on your smart phone so that you can use it as a flashlight. "
                + "I am a high school student learning the ropes of building elegant and simple Android applications. "
                + "Please leave a rating on the Play Store and check out some of my other applications too!"
                + "\n"
                + "If you would like to donate to my cause, all donations are accepted but not expected. All proceeds go towards new applications. "
                + "I hope this application suits all your flashlight needs. "
                + "\n" + "Thank you!")
        .setNeutralButton("Close",
            new DialogInterface.OnClickListener() {

              @Override
              public void onClick(DialogInterface arg0, int arg1) {
                // leave blank
              }
            }).show();
  }
}

Java Source Code List

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