picture widget android

The memory used by a picture (BITMAP) in Android is mainly related to the following factors: image length, image width, number of bytes per pixel. Memory occupied by a picture (BitMap) = picture length * Picture width * Number of bytes occupied in pixels Note: The image leng

: Either black or white, only one bit is required to indicate that 1/8 bytes are required to represent a pixel value. In this case the picture above shows up to load into memory required: 1920x1080 * 1/8/1024/1024= 0.2M. 16-bit graph: Requires 1/21 bytes to represent a pixel value. In this case the chip load into the memory ready display needs: 1920x1080 * 1024/1024 = 1.09M. 256-bit graph:

Images downloaded on the web are self-adapting:android:adjustviewbounds= "true" (which is explained in detail below) android:id= "@+id/dynamic_item_image"android:layout_width= "Wrap_content"android:layout_height= "Wrap_content"android:layout_gravity= "Top"android:layout_margintop= "5dip" android:adjustviewbounds= "true" android:background= "@drawable/imageview_background"/> Additionally, Android: background= "@drawable/imageview_background" is to

Abstract: This is fast taxi mobile end architect,Android Open Source project source code parsing CODEKK Initiator Wu Update (@Trinea) on the MDCC share content, from the overall design and principle of several picture cache By comparison, friends who do not use them can also understand their implementation on certain features."Csdn Live Report" October 14-16th, "2015 Mobile Developers Conference · China "(M

I. Scenarios and causes of the oom problem A good app always has beautiful pictures, so the loading of images in Android development is always avoided, and in the process of loading pictures, if handled improperly, there will be oom problem. So how to solve this problem completely? This article will specifically describe this knowledge.First, let's summarize that the oom scenario that appears during the loading of the

As an app, need to select local pictures, the first consideration is undoubtedly the system album, but Android phone a variety of, and then the mobile phone pixel upgrade, large map can not return such abnormal factors, resulting in a more difficult to adapt to the model, QQ has been in their own app integrated image selection function, Give up the system to provide the picture selector, here imitation QQ m

); Intent.putextra ("Return-data",true); Startactivityforresult (Intent, head_image_zoom); }}The above code gets the return value of the process, using three methods, the detailed implementation of the time is only one way to do. The third way is recommended.It is worth mentioning that. This small project needs to add a privilege value to the configuration file:uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>Error without this permission!This small project is use

Image processing in Android Used to process project images in Android Copy Code code as follows: Package com.zhanggeng.contact.tools; Import Java.io.ByteArrayOutputStream;Import Java.io.File;Import java.io.FileNotFoundException;Import Java.io.FileOutputStream;Import java.io.IOException; Import Android.graphics.Bitmap;Import Android.graphics.Bitmap.Config;Import Android.graphics.BitmapFac

This article illustrates four ways to get picture resources from the Android programming implementation. Share to everyone for your reference, specific as follows: 1. The picture is placed in the SDcard: Copy Code code as follows: Bitmap imagebitmap = bitmapfactory.decodefile (path)//path is the path to the pic