Android Open Source - android-fb-like-slideout-navigation Slideout Helper

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From Project

Back to project page android-fb-like-slideout-navigation.

License

The source code is released under:

Apache License

Java Source Code

package com.korovyansk.android.slideout;
/*from w ww.  j a v  a2s  .  c o m*/
import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Rect;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.view.animation.Animation;
import android.view.animation.Animation.AnimationListener;
import android.view.animation.TranslateAnimation;
import android.widget.ImageView;
import android.widget.RelativeLayout.LayoutParams;

public class SlideoutHelper {

  private static Bitmap sCoverBitmap = null;
  private static int sWidth = -1;

  public static void prepare(Activity activity, int id, int width) {
    if (sCoverBitmap != null) {
      sCoverBitmap.recycle();
    }
    Rect rectgle = new Rect();
    Window window = activity.getWindow();
    window.getDecorView().getWindowVisibleDisplayFrame(rectgle);
    int statusBarHeight = rectgle.top;

    ViewGroup v1 = (ViewGroup) activity.findViewById(id).getRootView();
    v1.setDrawingCacheEnabled(true);
    Bitmap source = Bitmap.createBitmap(v1.getDrawingCache());
    v1.setDrawingCacheEnabled(false);
    if (statusBarHeight != 0) {
      sCoverBitmap = Bitmap.createBitmap(source, 0, statusBarHeight, source.getWidth(), source.getHeight() - statusBarHeight);
      source.recycle();
    } else {
      sCoverBitmap = source;
    }
    sWidth = width;
  }

  public SlideoutHelper(Activity activity) {
    this(activity, false);
  }
  
  public SlideoutHelper(Activity activity, boolean reverse) {
    mActivity = activity;
    mReverse = reverse;
  }

  public void activate() {
    mActivity.setContentView(R.layout.slideout);
    mCover = (ImageView) mActivity.findViewById(R.id.slidedout_cover);
    mCover.setImageBitmap(sCoverBitmap);
    mCover.setOnClickListener(new OnClickListener() {
      @Override
      public void onClick(View v) {
        close();
      }
    });
    int x = (int) (sWidth * 1.2f);
    if (mReverse) {
      @SuppressWarnings("deprecation")
      final android.widget.AbsoluteLayout.LayoutParams lp = new android.widget.AbsoluteLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT, x, 0);
      mActivity.findViewById(R.id.slideout_placeholder).setLayoutParams(lp);
    } else{
      @SuppressWarnings("deprecation")
      final android.widget.AbsoluteLayout.LayoutParams lp = new android.widget.AbsoluteLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT, 0, 0);
      mActivity.findViewById(R.id.slideout_placeholder).setLayoutParams(lp);
    }
    initAnimations();
  }

  public void open() {
    mCover.startAnimation(mStartAnimation);
  }

  public void close() {
    mCover.startAnimation(mStopAnimation);
  }

  protected void initAnimations() {
    int displayWidth = ((WindowManager) mActivity.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay().getWidth();
    final int shift = (mReverse ? -1 : 1) * (sWidth - displayWidth);
    mStartAnimation = new TranslateAnimation(
        TranslateAnimation.ABSOLUTE, 0,
        TranslateAnimation.ABSOLUTE, -shift,
        TranslateAnimation.ABSOLUTE, 0,
        TranslateAnimation.ABSOLUTE, 0
        );

    mStopAnimation = new TranslateAnimation(
        TranslateAnimation.ABSOLUTE, 0,
        TranslateAnimation.ABSOLUTE, shift,
        TranslateAnimation.ABSOLUTE, 0,
        TranslateAnimation.ABSOLUTE, 0
        );
    mStartAnimation.setDuration(DURATION_MS);
    mStartAnimation.setFillAfter(true);
    mStartAnimation.setAnimationListener(new AnimationListener() {

      @Override
      public void onAnimationStart(Animation animation) {
      }

      @Override
      public void onAnimationRepeat(Animation animation) {
      }

      @Override
      public void onAnimationEnd(Animation animation) {
        mCover.setAnimation(null);
        @SuppressWarnings("deprecation")
        final android.widget.AbsoluteLayout.LayoutParams lp = new android.widget.AbsoluteLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT, -shift, 0);
        mCover.setLayoutParams(lp);
      }
    });

    mStopAnimation.setDuration(DURATION_MS);
    mStopAnimation.setFillAfter(true);
    mStopAnimation.setAnimationListener(new AnimationListener() {

      @Override
      public void onAnimationStart(Animation animation) {
      }

      @Override
      public void onAnimationRepeat(Animation animation) {
      }

      @Override
      public void onAnimationEnd(Animation animation) {
        mActivity.finish();
        mActivity.overridePendingTransition(0, 0);
      }
    });
  }

  private static final int DURATION_MS = 400;
  private ImageView mCover;
  private Activity mActivity;
  private boolean mReverse = false;
  private Animation mStartAnimation;
  private Animation mStopAnimation;
}

Java Source Code List

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