Zhao Yazhi _android's getresources () resource reference

Today to do an Android scratch music project, which used a lot of places to use the getresources.

<span style= "FONT-SIZE:12PX;" >//get the picture//parameter 1:res is a reference to the resource, the parameter 2:id is the Idafter = Bitmapfactory.decoderesource of the picture (Getresources (), r.drawable.b); before = Bitmapfactory.decoderesource (Getresources (), R.drawable.a);</span>

in the beginning, it was not quite understood why the Getresources () method could be used to obtain the resources of the existing system. So I looked at the document and read the information:

Packet Package:android.content.res
Main categories: Resources

InputStream openrawresource (int id) gets the data stream of the resource, reads the resource data

Put a picture resource, add your file to your project in the res/drawable/directory, from here, you can reference it to your code or your XML layout, that is, reference it can also use the resource number, such as you choose a file as long as the suffix is removed (for example: My_ Image.png refers to it is just my_image).

When you need to use the XML resources, you can use Context.getresources (). getdrawable (R .... The address of the resource such as: R.string.ok);

When you do not have a context parameter inside your method, you can This.getcontext (). Getresources (); that's it.

Note that when using getresource (), note

1, must have a context

2, can be used as a member variable, construct incoming or method parameters passed in. You can do it.

Put the resource file under the/raw/raw of the application

After you get the resource using Getresources in your app, open the file with the Openrawresource method (the resource file name without the suffix). For example:

Resources myresources = Getresources ();  InputStream myFile = Myresources.openrawresource (r.raw.myfilename);  

As with traditional Java file operations, the Openfileinput and Openfileoutput methods are available in the Android API to read files on the device.

InputStream FS =this.getresources (). Openrawresource (R.RAW.KB); (The resource file is named kb.html and does not require a suffix. html)  InputStreamReader read = new InputStreamReader (FS, "Gb2312″");  

read PNG or BMG under the Res/drawable directory

Get Resources Object  r = This.getcontext (). Getresources ();  Reads a resource as a data stream  InputStream is = R.openrawresource (r.drawable.my_background_image);  Bitmapdrawable Bmpdraw = new Bitmapdrawable (is);  Bitmap bmp = Bmpdraw.getbitmap ();  

Method 2:

InputStream is = Getresources (). Openrawresource (R.drawable.icon);  Bitmap Mbitmap = Bitmapfactory.decodestream (is);  Paint Mpaint = new paint ();  Canvas.drawbitmap (Mbitmap, Max, mpaint);