获取Assets目录下的图片并显示

 1 package com.jingle.getlocal;
 2
 3
 4 import java.io.InputStream;
 5
 6 import android.app.Activity;
 7 import android.content.res.AssetManager;
 8 import android.graphics.Bitmap;
 9 import android.graphics.BitmapFactory;
10
11 import android.os.Bundle;
12 import android.widget.ImageView;
13
14 public class MainActivity extends Activity {
15
16     @Override
17     protected void onCreate(Bundle savedInstanceState) {
18         super.onCreate(savedInstanceState);
19         setContentView(R.layout.activity_main);
20
21         initImg();
22
23     }
24
25     private void initImg() {
26         ImageView img = (ImageView) findViewById(R.id.img);
27         img.setImageBitmap(getImg("orca.jpg"));//assets目录下文件名
28     }
29     //获取图片的Bitmap对象
30     private Bitmap getImg(String file) {
31         Bitmap bmp = null;
32         //获取AssetsMng对象
33         AssetManager am = getResources().getAssets();
34         try {
35             //打开文件,返回输入流
36             InputStream is = am.open(file);
37             //Bitmap工厂解码输入流,得到bmp对象
38             bmp = BitmapFactory.decodeStream(is);
39             is.close();
40         } catch (Exception e) {
41             e.printStackTrace();
42         }
43         return bmp;
44     }
45
46 }