Android Open Source - qcn Quick Circle Base Activity

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License

The source code is released under:
GNU General Public License
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Java Source Code

package zsoltmester.qcn.quickcircle;
// w  w  w.ja  v  a  2 s  . co m
import android.app.Activity;
import android.content.Context;
import android.content.IntentFilter;
import android.content.res.Resources;
import android.os.Bundle;
import android.view.Window;
import android.view.WindowManager;
import android.widget.FrameLayout;

import zsoltmester.qcn.R;
import zsoltmester.qcn.tools.Logger;

import static android.widget.RelativeLayout.LayoutParams;

public abstract class QuickCircleBaseActivity extends Activity implements CoverEventReceiver.CoverEventListener {

  private static final String COVER_RESOURCE_TYPE = "dimen";
  private static final String COVER_RESOURCE_PACKAGE = "com.lge.internal";

  private final Logger logger = Logger.createWithLogTag(QuickCircleBaseActivity.class.getSimpleName());
  private CoverEventReceiver coverEventReceiver = CoverEventReceiver.createWithCoverEventListener(this);
  private Context applicationContext;
  private boolean isG3;

  private Resources resources;
  private FrameLayout coverView;
  private int circleHeight;
  private int circleXpos;
  private int circleYpos;
  private int circleDiameter;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    applicationContext = getApplicationContext();
    resources = getResources();
    checkDevice();
    registerCoverEventReceiver();
    initWindow();
    initCoverLayout();
  }

  private void checkDevice() {
    String device = android.os.Build.DEVICE;
    isG3 = device.equals("g3") || device.equals("tiger6");
    logger.log("isG3:" + isG3);
  }

  private void registerCoverEventReceiver() {
    IntentFilter filter = new IntentFilter();
    filter.addAction(CoverEventReceiver.ACTION_ACCESSORY_COVER_EVENT);
    applicationContext.registerReceiver(coverEventReceiver, filter);
  }

  private void initWindow() {
    Window window = getWindow();
    if (window != null) {
      window.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED
          | WindowManager.LayoutParams.FLAG_FULLSCREEN
          | WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
    }
  }

  private void initCoverLayout() {
    initCoverInformationFromDB();
    setContentView(getCoverLayoutIdentifier());
    coverView = (FrameLayout) findViewById(R.id.cover_container);
    cropLayoutForTheCircleSize();
  }

  private void initCoverInformationFromDB() {
    circleHeight = getSizeResourceInPixelFromDB("config_circle_window_height");
    circleXpos = getSizeResourceInPixelFromDB("config_circle_window_x_pos");
    circleYpos = getSizeResourceInPixelFromDB("config_circle_window_y_pos");
    circleDiameter = getSizeResourceInPixelFromDB("config_circle_diameter");
  }

  private int getSizeResourceInPixelFromDB(String resourceName) {
    int resourceIdentifier = resources.getIdentifier(resourceName, COVER_RESOURCE_TYPE, COVER_RESOURCE_PACKAGE);
    return resources.getDimensionPixelSize(resourceIdentifier);
  }

  /**
   * A layout id for the activity.
   * It has to contain a {@link FrameLayout} with id "cover".
   * That {@link FrameLayout} has to contain the layout of the circle.
   *
   * @return The activity layout identifier.
   */
  protected abstract int getCoverLayoutIdentifier();

  private void cropLayoutForTheCircleSize() {
    LayoutParams layoutParam = (LayoutParams) coverView.getLayoutParams();
    layoutParam.leftMargin = circleXpos < 0 ? circleXpos : layoutParam.leftMargin;
    layoutParam.topMargin = isG3 ? circleYpos : circleYpos + (circleHeight - circleDiameter) / 2;
    coverView.setLayoutParams(layoutParam);
  }

  @Override
  protected void onDestroy() {
    logger.log("onDestroy");
    super.onDestroy();
    applicationContext.unregisterReceiver(coverEventReceiver);
  }

  @Override
  public void onCoverClosed() {
    initWindow();
  }

  @Override
  public void onCoverOpened() {
    finish();
  }
}
Java Source Code List
