Java Code Examples for android.graphics.Bitmap.Config#ARGB_8888

public static void compressBitmap(Bitmap bit, int quality, String fileName,
                                  boolean optimize) {
    Log.d("native", "compress of native");
    if (bit.getConfig() != Config.ARGB_8888) {
        Bitmap result = null;

        result = Bitmap.createBitmap(bit.getWidth(), bit.getHeight(),
                Config.ARGB_8888);
        Canvas canvas = new Canvas(result);
        Rect rect = new Rect(0, 0, bit.getWidth(), bit.getHeight());
        canvas.drawBitmap(bit, null, rect, null);
        saveBitmap(result, quality, fileName, optimize);
        result.recycle();
    } else {
        saveBitmap(bit, quality, fileName, optimize);
    }

}
 

/**
 * conversion methods
 */

public static Config convertTextureColorFormatToBitmapConfig(PLTextureColorFormat colorFormat) {
    Config config = Config.ARGB_8888;
    switch (colorFormat) {
        case PLTextureColorFormatRGB565:
            config = Config.RGB_565;
            break;
        case PLTextureColorFormatRGBA4444:
            config = Config.ARGB_4444;
            break;
        default:
            break;
    }
    return config;
}
 

private Bitmap compressImageFromFile(String srcPath) {
		BitmapFactory.Options newOpts = new BitmapFactory.Options();
		newOpts.inJustDecodeBounds = true;//只读边,不读内容
		Bitmap bitmap = BitmapFactory.decodeFile(srcPath, newOpts);

		newOpts.inJustDecodeBounds = false;
		int w = newOpts.outWidth;
		int h = newOpts.outHeight;
		float hh = 800f;//
		float ww = 480f;//
		int be = 1;
		if (w > h && w > ww) {
			be = (int) (newOpts.outWidth / ww);
		} else if (w < h && h > hh) {
			be = (int) (newOpts.outHeight / hh);
		}
		if (be <= 0)
			be = 1;
		newOpts.inSampleSize = be;//设置采样率
		
		newOpts.inPreferredConfig = Config.ARGB_8888;//该模式是默认的,可不设
		newOpts.inPurgeable = true;// 同时设置才会有效
		newOpts.inInputShareable = true;//。当系统内存不够时候图片自动被回收
		
		bitmap = BitmapFactory.decodeFile(srcPath, newOpts);
//		return compressBmpFromBmp(bitmap);//原来的方法调用了这个方法企图进行二次压缩
									//其实是无效的,大家尽管尝试
		return bitmap;
	}
 

/**
 * Return the byte usage per pixel of a bitmap based on its configuration.
 * 
 * @param config
 *            The bitmap configuration.
 * @return The byte usage per pixel.
 */
private static int getBytesPerPixel(Config config) {
	if (config == Config.ARGB_8888) {
		return 4;
	} else if (config == Config.RGB_565) {
		return 2;
	} else if (config == Config.ARGB_4444) {
		return 2;
	} else if (config == Config.ALPHA_8) {
		return 1;
	}
	return 1;
}
 

@Override public Resource<Bitmap> decode(Drawable drawable, int width, int height) throws IOException {
	Config config = PixelFormat.formatHasAlpha(drawable.getOpacity())? Config.ARGB_8888 : Config.RGB_565;
	Bitmap bitmap = pool.get(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), config);
	if (bitmap == null) {
		bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), config);
	}
	Canvas canvas = new Canvas(bitmap);
	drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
	drawable.draw(canvas);
	return new BitmapResource(bitmap, pool);
}
 

/**
 * 按比例缩小图片的像素以达到压缩的目的
 *
 * @param imgPath
 * @return
 * @author JPH
 * @date 2014-12-5下午11:30:59
 */
private void compressImageByPixel(String imgPath, CompressListener listener) throws FileNotFoundException {
    if (imgPath == null) {
        sendMsg(false, imgPath, "要压缩的文件不存在", listener);
        return;
    }
    BitmapFactory.Options newOpts = new BitmapFactory.Options();
    newOpts.inJustDecodeBounds = true;//只读边,不读内容
    BitmapFactory.decodeFile(imgPath, newOpts);
    newOpts.inJustDecodeBounds = false;
    int width = newOpts.outWidth;
    int height = newOpts.outHeight;
    float maxSize = config.getMaxPixel();
    int be = 1;
    if (width >= height && width > maxSize) {//缩放比,用高或者宽其中较大的一个数据进行计算
        be = (int) (newOpts.outWidth / maxSize);
        be++;
    } else if (width < height && height > maxSize) {
        be = (int) (newOpts.outHeight / maxSize);
        be++;
    }
    newOpts.inSampleSize = be;//设置采样率
    newOpts.inPreferredConfig = Config.ARGB_8888;//该模式是默认的,可不设
    newOpts.inPurgeable = true;// 同时设置才会有效
    newOpts.inInputShareable = true;//。当系统内存不够时候图片自动被回收
    Bitmap bitmap = BitmapFactory.decodeFile(imgPath, newOpts);
    if (config.isEnableQualityCompress()) {
        compressImageByQuality(bitmap, imgPath, listener);//压缩好比例大小后再进行质量压缩
    } else {
        File thumbnailFile = getThumbnailFile(new File(imgPath));
        bitmap.compress(Bitmap.CompressFormat.JPEG, 100, new FileOutputStream(thumbnailFile));

        listener.onCompressSuccess(thumbnailFile.getPath());
    }
}
 

@Override
public View getView(int position, View convertView, ViewGroup parent) {
	final ViewHolder viewHolder ;
	if(convertView == null){
		convertView = inflater.inflate(R.layout.item_menu_content, parent, false);
		viewHolder = new ViewHolder();
		viewHolder.iv_image = (ImageView)convertView.findViewById(R.id.item_menu_content_img);
		viewHolder.tv_menusName = (TextView)convertView.findViewById(R.id.item_menu_content_title);
		viewHolder.tv_price = (TextView)convertView.findViewById(R.id.item_menu_content_price);
		
		convertView.setTag(viewHolder);
	}else{
		viewHolder = (ViewHolder)convertView.getTag();
	}

	//创建一个RequestQueue对象
	RequestQueue requestQueue = Volley.newRequestQueue(context);
	     	
    //创建ImageRequest对象
	ImageRequest imageRequest = new ImageRequest(
			Constant.URL_WEB_SERVER+datas.get(position).get("menusImagePath").toString(),//url
	    	new Response.Listener<Bitmap>() {//监听器Listener
				@Override
	    		public void onResponse(Bitmap response) {
	    			viewHolder.iv_image.setImageBitmap(response);
	    		}
	    		//参数3、4表示图片宽高,Bitmap.Config.ARGB_8888表示图片每个像素占据4个字节大小
	    	}, 0, 0, Config.ARGB_8888, new Response.ErrorListener() {//图片加载请求失败的回调Listener
	    			@Override
	    			public void onErrorResponse(VolleyError error) {
	    				viewHolder.iv_image.setImageResource(R.drawable.ic_normal_pic);
	    			}
	    	});
	//将ImageRequest加载到Queue
	 requestQueue.add(imageRequest);
	    
	viewHolder.tv_menusName.setText(datas.get(position).get("menuName").toString());
	viewHolder.tv_price.setText("￥"+datas.get(position).get("total_price").toString());
	return convertView;
}
 

/**
 * 通过资源id转化成Bitmap
 */
public static Bitmap ReadBitmapById(Context context, int resId) {
    BitmapFactory.Options opt = new BitmapFactory.Options();
    opt.inPreferredConfig = Config.ARGB_8888;
    opt.inPurgeable = true;
    opt.inInputShareable = true;
    InputStream is = context.getResources().openRawResource(resId);
    return BitmapFactory.decodeStream(is, null, opt);
}
 

/**
 * Starts playing the given animated GIF logo.
 */
public void playAnimatedLogo(BaseGifImage gifImage) {
    mLoadingView.hideLoadingUI();
    mAnimatedLogoDrawable = new BaseGifDrawable(gifImage, Config.ARGB_8888);
    mAnimatedLogoMatrix = new Matrix();
    setMatrix(mAnimatedLogoDrawable.getIntrinsicWidth(),
            mAnimatedLogoDrawable.getIntrinsicHeight(), mAnimatedLogoMatrix, false);
    // Set callback here to ensure #invalidateDrawable() is called.
    mAnimatedLogoDrawable.setCallback(this);
    mAnimatedLogoDrawable.start();
}
 

/**
 * Return the byte usage per pixel of a bitmap based on its configuration.
 *
 * @param config The bitmap configuration.
 * @return The byte usage per pixel.
 */
private static int getBytesPerPixel(Config config) {
    if (config == Config.ARGB_8888) {
        return 4;
    } else if (config == Config.RGB_565) {
        return 2;
    } else if (config == Config.ARGB_4444) {
        return 2;
    } else if (config == Config.ALPHA_8) {
        return 1;
    }
    return 1;
}
 

/**
 * @param resources 传入Resources
 * @param resid     资源ID
 * @param size      要压缩的大小
 * @return
 */
public static Bitmap getSmallBitmap(Resources resources, int resid, int size) {
    final BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true;
    BitmapFactory.decodeResource(resources, resid, options);

    // Calculate inSampleSize
    options.inSampleSize = size;
    Log.i("Bitmap", "--" + options.inSampleSize);
    // Decode bitmap with inSampleSize set
    options.inJustDecodeBounds = false;
    options.inPreferredConfig = Config.ARGB_8888;
    Bitmap bitmap = BitmapFactory.decodeResource(resources, resid, options);
    if (bitmap == null) {
        return null;
    }
    ByteArrayOutputStream baos = null;
    try {
        baos = new ByteArrayOutputStream();
        bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
    } finally {
        try {
            if (baos != null) baos.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    return bitmap;
}
 

/**
 * Return the byte usage per pixel of a bitmap based on its configuration.
 *
 * @param config The bitmap configuration.
 * @return The byte usage per pixel.
 */
private static int getBytesPerPixel(Config config) {
    if (config == Config.ARGB_8888) {
        return 4;
    } else if (config == Config.RGB_565) {
        return 2;
    } else if (config == Config.ARGB_4444) {
        return 2;
    } else if (config == Config.ALPHA_8) {
        return 1;
    }
    return 1;
}
 

/**
 * Return the byte usage per pixel of a bitmap based on its configuration.
 * @param config The bitmap configuration.
 * @return The byte usage per pixel.
 */
private static int getBytesPerPixel(Config config) {
    if (config == Config.ARGB_8888) {
        return 4;
    } else if (config == Config.RGB_565) {
        return 2;
    } else if (config == Config.ARGB_4444) {
        return 2;
    } else if (config == Config.ALPHA_8) {
        return 1;
    }
    return 1;
}
 

/**
 *  将图片从本地读到内存时,进行压缩 ,即图片从File形式变为Bitmap形式
 *  特点: 通过设置采样率, 减少图片的像素, 达到对内存中的Bitmap进行压缩
 * @param srcPath
 * @return
 */
public static Bitmap compressImageFromFile(String srcPath, float pixWidth, float pixHeight) {
    BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true;// 只读边,不读内容
    Bitmap bitmap = BitmapFactory.decodeFile(srcPath, options);

    options.inJustDecodeBounds = false;
    int w = options.outWidth;
    int h = options.outHeight;
    //float pixWidth = 800f;//
    //float pixHeight = 480f;//
    int scale = 1;
    if (w > h && w > pixWidth) {
        scale = (int) (options.outWidth / pixWidth);
    } else if (w < h && h > pixHeight) {
        scale = (int) (options.outHeight / pixHeight);
    }
    if (scale <= 0)
        scale = 1;
    options.inSampleSize = scale;// 设置采样率

    options.inPreferredConfig = Config.ARGB_8888;// 该模式是默认的,可不设
    options.inPurgeable = true;// 同时设置才会有效
    options.inInputShareable = true;// 。当系统内存不够时候图片自动被回收

    bitmap = BitmapFactory.decodeFile(srcPath, options);
    // return compressBmpFromBmp(bitmap);//原来的方法调用了这个方法企图进行二次压缩
    // 其实是无效的,大家尽管尝试
    return bitmap;
}
 

/**
 * Return the byte usage per pixel of a bitmap based on its configuration.
 * @param config The bitmap configuration.
 * @return The byte usage per pixel.
 */
private static int getBytesPerPixel(Config config) {
    if (config == Config.ARGB_8888) {
        return 4;
    } else if (config == Config.RGB_565) {
        return 2;
    } else if (config == Config.ARGB_4444) {
        return 2;
    } else if (config == Config.ALPHA_8) {
        return 1;
    }
    return 1;
}
 

/**
 * @param resources 传入Resources
 * @param resid     资源ID
 * @param width     目标width
 * @param height    目标height
 * @return
 */
public static Bitmap getSmallBitmap(Resources resources, int resid, int width, int height) {
    final BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true;
    BitmapFactory.decodeResource(resources, resid, options);

    // Calculate inSampleSize
    options.inSampleSize = calculateInSampleSize(options, width, height);
    Log.i("Bitmap", "--" + options.inSampleSize);
    // Decode bitmap with inSampleSize set
    options.inJustDecodeBounds = false;
    options.inPreferredConfig = Config.ARGB_8888;
    Bitmap bitmap = BitmapFactory.decodeResource(resources, resid, options);
    if (bitmap == null) {
        return null;
    }
    ByteArrayOutputStream baos = null;
    try {
        baos = new ByteArrayOutputStream();
        bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
    } finally {
        try {
            if (baos != null) baos.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    return bitmap;
}
 

@Override
public View getView(int position, View convertView, ViewGroup parent) {
	final ViewHolder viewHolder ;
	if(convertView == null){
		convertView = inflater.inflate(R.layout.item_list_order, parent, false);
		viewHolder = new ViewHolder();
		viewHolder.iv_image = (ImageView)convertView.findViewById(R.id.order_iv);
		viewHolder.tv_menusName = (TextView)convertView.findViewById(R.id.order_menusName_tv);
		viewHolder.tv_amount = (TextView)convertView.findViewById(R.id.order_amount_tv);
		viewHolder.tv_time = (TextView)convertView.findViewById(R.id.order_time_tv);
		viewHolder.tv_price = (TextView)convertView.findViewById(R.id.order_price_tv);
		viewHolder.tv_status = (TextView)convertView.findViewById(R.id.order_status_tv);
		
		convertView.setTag(viewHolder);
	}else{
		viewHolder = (ViewHolder)convertView.getTag();
	}

	//创建一个RequestQueue对象
	RequestQueue requestQueue = Volley.newRequestQueue(context);
	     	
    //创建ImageRequest对象
	ImageRequest imageRequest = new ImageRequest(
			Constant.URL_WEB_SERVER+datas.get(position).get("picPath").toString(),//url
	    	new Response.Listener<Bitmap>() {//监听器Listener
				@Override
	    		public void onResponse(Bitmap response) {
	    			viewHolder.iv_image.setImageBitmap(response);
	    		}
	    		//参数3、4表示图片宽高,Bitmap.Config.ARGB_8888表示图片每个像素占据4个字节大小
	    	}, 0, 0, Config.ARGB_8888, new Response.ErrorListener() {//图片加载请求失败的回调Listener
	    			@Override
	    			public void onErrorResponse(VolleyError error) {
	    				viewHolder.iv_image.setImageResource(R.drawable.ic_normal_pic);
	    			}
	    	});
	//将ImageRequest加载到Queue
	 requestQueue.add(imageRequest);
	    
	viewHolder.tv_menusName.setText(datas.get(position).get("name").toString());
	viewHolder.tv_amount.setText("×"+datas.get(position).get("amount").toString());
	viewHolder.tv_time.setText("订单时间:"+datas.get(position).get("order_time").toString());
	viewHolder.tv_price.setText("总价:￥"+datas.get(position).get("total_price").toString());
	viewHolder.tv_status.setText(datas.get(position).get("status").toString());
	return convertView;
}
 

@Override
protected void writeTextureToHardware(final GLState pGLState) {
	final PixelFormat pixelFormat = this.mBitmapTextureFormat.getPixelFormat();
	final int glInternalFormat = pixelFormat.getGLInternalFormat();
	final int glFormat = pixelFormat.getGLFormat();
	final int glType = pixelFormat.getGLType();

	GLES20.glTexImage2D(GLES20.GL_TEXTURE_2D, 0, glInternalFormat, this.mWidth, this.mHeight, 0, glFormat, glType, null);

	final boolean preMultipyAlpha = this.mTextureOptions.mPreMultiplyAlpha;
	/* Non alpha premultiplied bitmaps are loaded with ARGB_8888 and converted down manually. */
	final Config bitmapConfig = (preMultipyAlpha) ? this.mBitmapTextureFormat.getBitmapConfig() : Config.ARGB_8888;

	final ArrayList<IBitmapTextureAtlasSource> textureSources = this.mTextureAtlasSources;
	final int textureSourceCount = textureSources.size();

	final ITextureAtlasStateListener<IBitmapTextureAtlasSource> textureStateListener = this.getTextureAtlasStateListener();
	for(int i = 0; i < textureSourceCount; i++) {
		final IBitmapTextureAtlasSource bitmapTextureAtlasSource = textureSources.get(i);
		try {
			final Bitmap bitmap = bitmapTextureAtlasSource.onLoadBitmap(bitmapConfig);
			if(bitmap == null) {
				throw new NullBitmapException("Caused by: " + bitmapTextureAtlasSource.getClass().toString() + " --> " + bitmapTextureAtlasSource.toString() + " returned a null Bitmap.");
			}

			final boolean useDefaultAlignment = MathUtils.isPowerOfTwo(bitmap.getWidth()) && MathUtils.isPowerOfTwo(bitmap.getHeight()) && pixelFormat == PixelFormat.RGBA_8888;
			if(!useDefaultAlignment) {
				/* Adjust unpack alignment. */
				GLES20.glPixelStorei(GLES20.GL_UNPACK_ALIGNMENT, 1);
			}

			if(preMultipyAlpha) {
				GLUtils.texSubImage2D(GLES20.GL_TEXTURE_2D, 0, bitmapTextureAtlasSource.getTextureX(), bitmapTextureAtlasSource.getTextureY(), bitmap, glFormat, glType);
			} else {
				pGLState.glTexSubImage2D(GLES20.GL_TEXTURE_2D, 0, bitmapTextureAtlasSource.getTextureX(), bitmapTextureAtlasSource.getTextureY(), bitmap, this.mPixelFormat);
			}

			if(!useDefaultAlignment) {
				/* Restore default unpack alignment. */
				GLES20.glPixelStorei(GLES20.GL_UNPACK_ALIGNMENT, GLState.GL_UNPACK_ALIGNMENT_DEFAULT);
			}

			bitmap.recycle();

			if(textureStateListener != null) {
				textureStateListener.onTextureAtlasSourceLoaded(this, bitmapTextureAtlasSource);
			}
		} catch (final NullBitmapException e) {
			if(textureStateListener != null) {
				textureStateListener.onTextureAtlasSourceLoadExeption(this, bitmapTextureAtlasSource, e);
			} else {
				throw e;
			}
		}
	}
}
 

/**
 * Decodes bitmap that keeps aspect-ratio and spans most within the bounds.
 */
private Bitmap decodeBitmap(Uri uri, int width, int height) {
    InputStream is = null;
    Bitmap bitmap = null;

    try {
        // TODO: Take max pixels allowed into account for calculation to avoid possible OOM.
        Rect bounds = getBitmapBounds(uri);
        int sampleSize = Math.max(bounds.width() / width, bounds.height() / height);
        sampleSize = Math.min(sampleSize, Math.max(bounds.width() / height, bounds.height() / width));

        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inSampleSize = Math.max(sampleSize, 1);
        options.inPreferredConfig = Config.ARGB_8888;

        is = context.getContentResolver().openInputStream(uri);
        bitmap = BitmapFactory.decodeStream(is, null, options);
    } catch (FileNotFoundException e) {
        Log.e(TAG, "FileNotFoundException: " + uri);
    } finally {
        closeStream(is);
    }

    // Ensure bitmap in 8888 format, good for editing as well as GL compatible.
    if ((bitmap != null) && (bitmap.getConfig() != Config.ARGB_8888)) {
        Bitmap copy = bitmap.copy(Config.ARGB_8888, true);
        bitmap.recycle();
        bitmap = copy;
    }

    if (bitmap != null) {
        // Scale down the sampled bitmap if it's still larger than the desired dimension.
        float scale = Math.min((float) width / bitmap.getWidth(), (float) height / bitmap.getHeight());
        scale = Math.max(scale, Math.min((float) height / bitmap.getWidth(), (float) width / bitmap.getHeight()));
        if (scale < 1) {
            Matrix m = new Matrix();
            m.setScale(scale, scale);
            Bitmap transformed = createBitmap(bitmap, m);
            bitmap.recycle();
            return transformed;
        }
    }
    return bitmap;
}
 

/**
 * Decodes bitmap that keeps aspect-ratio and spans most within the bounds.
 */
private Bitmap decodeBitmap(Uri uri, int width, int height) {
    InputStream is = null;
    Bitmap bitmap = null;

    try {
        // TODO: Take max pixels allowed into account for calculation to avoid possible OOM.
        Rect bounds = getBitmapBounds(uri);
        int sampleSize = Math.max(bounds.width() / width, bounds.height() / height);
        sampleSize = Math.min(sampleSize, Math.max(bounds.width() / height, bounds.height() / width));

        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inSampleSize = Math.max(sampleSize, 1);
        options.inPreferredConfig = Config.ARGB_8888;

        is = context.getContentResolver().openInputStream(uri);
        bitmap = BitmapFactory.decodeStream(is, null, options);
    } catch (FileNotFoundException e) {
        Log.e(TAG, "FileNotFoundException: " + uri);
    } finally {
        closeStream(is);
    }

    // Ensure bitmap in 8888 format, good for editing as well as GL compatible.
    if ((bitmap != null) && (bitmap.getConfig() != Config.ARGB_8888)) {
        Bitmap copy = bitmap.copy(Config.ARGB_8888, true);
        bitmap.recycle();
        bitmap = copy;
    }

    if (bitmap != null) {
        // Scale down the sampled bitmap if it's still larger than the desired dimension.
        float scale = Math.min((float) width / bitmap.getWidth(), (float) height / bitmap.getHeight());
        scale = Math.max(scale, Math.min((float) height / bitmap.getWidth(), (float) width / bitmap.getHeight()));
        if (scale < 1) {
            Matrix m = new Matrix();
            m.setScale(scale, scale);
            Bitmap transformed = createBitmap(bitmap, m);
            bitmap.recycle();
            return transformed;
        }
    }
    return bitmap;
}