res/raw文件的存放和讀取，resraw存放讀取

res/raw文件的存放和讀取，resraw存放讀取

通常，如果Android開發者有些文件比如音頻，視頻，.html，.mp3等等這些文件不希望編譯器編譯而保持原始原貌打包進apk文件（這在游戲開發中很常見和普遍，如游戲用到的游戲音樂、圖等資源），那麼可以使用Android在res目錄下的res/raw保存。res/raws目錄下的文件將不被Android編譯成二進制，Android將這些文件資源保持原狀原封不動的打包進最終編譯發布時候的apk文件。

怎樣讀取raw文件：

 1 package com.zzw.testraw;
 2 
 3 import java.io.BufferedInputStream;
 4 import java.io.ByteArrayOutputStream;
 5 import java.io.IOException;
 6 import java.io.InputStream;
 7 
 8 import android.app.Activity;
 9 import android.os.Bundle;
10 import android.util.Log;
11 
12 public class MainActivity extends Activity {
13 
14     private static final String TAG = "MainActivity";
15 
16     @Override
17     protected void onCreate(Bundle savedInstanceState) {
18         super.onCreate(savedInstanceState);
19         // setContentView(R.layout.activity_main);
20 
21         readRaw();
22     }
23 
24     private void readRaw() {
25         InputStream is = getResources().openRawResource(R.raw.hello);
26 
27         try {
28             byte[] data = readByteDataFromInputStream(is);
29             String content = new String(data, 0, data.length, "UTF-8");
30             Log.d(TAG, content);
31         } catch (IOException e) {
32             e.printStackTrace();
33         }
34 
35     }
36 
37     private byte[] readByteDataFromInputStream(InputStream is) throws IOException {
38         BufferedInputStream bis = new BufferedInputStream(is);
39 
40         ByteArrayOutputStream baos = new ByteArrayOutputStream();
41 
42         final int BUFFER_SIZE = 2 * 1024;
43 
44         int c = 0;
45         byte[] buffer = new byte[BUFFER_SIZE];
46 
47         // 寫成baos.write(buffer, 0, c)的原因是讀多少寫多少
48         while ((c = bis.read(buffer)) != -1) {
49             baos.write(buffer, 0, c);
50             baos.flush();
51         }
52 
53         byte[] data = baos.toByteArray();
54         baos.flush();
55 
56         baos.close();
57         is.close();
58 
59         return data;
60 
61     }
62 }