1 import android.content.Context;
2 import android.content.res.AssetManager;
3 import android.graphics.Bitmap;
4 import android.graphics.BitmapFactory;
5
6 import java.io.BufferedReader;
7 import java.io.ByteArrayOutputStream;
8 import java.io.IOException;
9 import java.io.InputStream;
10 import java.io.InputStreamReader;
11
12
13 public class LocalFileUtils {
14
15 /**
16 * 获取Asset下文本内容
17 * @param context
18 * @param str
19 * @return
20 */
21 public final static String getStringFormAsset(Context context, String str) {
22 BufferedReader in = null;
23 try {
24 in = new BufferedReader(new InputStreamReader(context.getAssets().open(str)));
25 String line;
26 StringBuilder buffer = new StringBuilder();
27 while ((line = in.readLine()) != null) {
28 buffer.append(line).append('\n');
29 }
30 return buffer.toString();
31 } catch (IOException e) {
32 e.printStackTrace();
33 return "";
34 } finally {
35 if (in != null) {
36 try {
37 in.close();
38 in = null;
39 } catch (IOException e) {
40 e.printStackTrace();
41 }
42 }
43 }
44 }
45
46 /**
47 * @description 从Assets中读取图片
48 *
49 * @param context
50 * @param fileName
51 * @return 图片
52 * @date 2015-6-11 15:00:55
53 */
54 public static Bitmap getImageFromAssetsFile(Context context, String fileName) {
55 Bitmap image = null;
56 AssetManager am = context.getAssets();
57 InputStream is = null;
58 try {
59 is = am.open(fileName);
60 image = BitmapFactory.decodeStream(is);
61 return image;
62 } catch (IOException e) {
63 e.printStackTrace();
64 return image;
65 } finally {
66 if(is != null) {
67 try {
68 is.close();
69 is = null;
70 } catch (IOException e) {
71 e.printStackTrace();
72 }
73 }
74 }
75 }
76
77 /**
78 * 获取Raw下文本内容
79 * @param context
80 * @param rawId
81 * @return
82 */
83 public final static String getStringFormRaw(Context context, int rawId) {
84 ByteArrayOutputStream baos = null;
85 InputStream in = context.getResources().openRawResource(rawId);
86 try {
87 baos = new ByteArrayOutputStream();
88 byte[] buffer = new byte[1024];
89 int len = 0;
90 while ((len = in.read(buffer)) != -1) {
91 baos.write(buffer, 0, len);
92 }
93 baos.close();
94 return baos.toString();
95 } catch (Exception e) {
96 e.printStackTrace();
97 return "";
98 } finally {
99 if (baos != null) {
100 try {
101 baos.close();
102 baos = null;
103 } catch (IOException e) {
104 e.printStackTrace();
105 }
106 }
107 }
108 }
109
110 }
1 long startTime4 = System.currentTimeMillis();
2 String my_json = LocalFileUtils.getStringFormAsset(this, "testbean1.json");
3 for (int n = 0; n < 100000; n++) {
4 // 使用JSON 操作 工具将JSON字符串封装到实体类
5 TestBean1 toBean = my_gson.fromJson(my_json, my_type); //JsonTool.toBean(json, TestBean1.class);
6 System.out.println(toBean);
7 }
8 long endTime4 = System.currentTimeMillis() - startTime4;
9 Log.i(TAG, "gson....." + endTime4);
