Android 拷贝资源文件到sd card

发表于 | 分类于

在开发中, 我们有时候需要把某些资源文件打包到apk中, 在程序需要的时候, 读取它们或者把它们放入sd card
in my project, i need to copy my source file to sd card , i have pricetag_svm.xml file under my project fiolderapp/src/assets and here is my code :

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
private void copyAssets(String file) throws IOException {
    AssetManager assetManager = getAssets();
    InputStream in = assetManager.open(file);
    if (in != null) {
        OutputStream out = null;
        File outFile = new File(getExternalFilesDir(null), file);
        if (!outFile.exists()) {
            Log.d("TAG", "outFile path" + outFile.getAbsolutePath());
            out = new FileOutputStream(outFile);
            copyFile(in, out);
            if (in != null) {
                try {
                    in.close();
                } catch (IOException e) {
                    // NOOP
                }
            }
            if (out != null) {
                try {
                    out.close();
                } catch (IOException e) {
                    // NOOP
                }
            }
        }
    }
}
private void copyFile(InputStream in, OutputStream out) throws IOException {
    byte[] buffer = new byte[1024];
    int read;
    while ((read = in.read(buffer)) != -1) {
        out.write(buffer, 0, read);
    }
}

so , at the right time of your needs , just 

1
copyAssets("pricetag_svm.xml");

after this ,you will read this source file in your decice’s sd card

Storage/Android/data/(your application package name)/files