Memory Size Class for viewing available storage 안드로이드 SD 외장 메모리 용량 sdcard

출처 : http://www.androidsnippets.com/memory-size-class-for-viewing-available-storage


Class used to view available and total storage for internal and external memory. Also does pretty formatting. 

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1. import java.io.File;  
2.   
3. import android.os.Environment;  
4. import android.os.StatFs;  
5.   
6. public class MemoryStatus {  
7.   
8.         static final int ERROR = -1;  
9.           
10.         static public boolean externalMemoryAvailable() {  
11.             return android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED);  
12.         }  
13.           
14.         static public long getAvailableInternalMemorySize() {  
15.                 File path = Environment.getDataDirectory();  
16.                 StatFs stat = new StatFs(path.getPath());  
17.                 long blockSize = stat.getBlockSize();  
18.                 long availableBlocks = stat.getAvailableBlocks();  
19.                 return availableBlocks * blockSize;  
20.         }  
21.           
22.         static public long getTotalInternalMemorySize() {  
23.                 File path = Environment.getDataDirectory();  
24.                 StatFs stat = new StatFs(path.getPath());  
25.                 long blockSize = stat.getBlockSize();  
26.                 long totalBlocks = stat.getBlockCount();  
27.                 return totalBlocks * blockSize;  
28.         }  
29.           
30.         static public long getAvailableExternalMemorySize() {  
31.                 if(externalMemoryAvailable()) {  
32.                         File path = Environment.getExternalStorageDirectory();  
33.                         StatFs stat = new StatFs(path.getPath());  
34.                         long blockSize = stat.getBlockSize();  
35.                         long availableBlocks = stat.getAvailableBlocks();  
36.                         return availableBlocks * blockSize;  
37.                 } else {  
38.                         return ERROR;  
39.                 }  
40.         }  
41.           
42.         static public long getTotalExternalMemorySize() {  
43.                 if(externalMemoryAvailable()) {  
44.                         File path = Environment.getExternalStorageDirectory();  
45.                         StatFs stat = new StatFs(path.getPath());  
46.                         long blockSize = stat.getBlockSize();  
47.                         long totalBlocks = stat.getBlockCount();  
48.                         return totalBlocks * blockSize;  
49.                 } else {  
50.                         return ERROR;  
51.                 }  
52.         }  
53.           
54.         static public String formatSize(long size) {  
55.                 String suffix = null;  
56.           
57.                 if (size >= 1024) {  
58.                         suffix = "KiB";  
59.                         size /= 1024;  
60.                         if (size >= 1024) {  
61.                                 suffix = "MiB";  
62.                                 size /= 1024;  
63.                         }  
64.                 }  
65.           
66.                 StringBuilder resultBuffer = new StringBuilder(Long.toString(size));  
67.           
68.                 int commaOffset = resultBuffer.length() - 3;  
69.                 while (commaOffset > 0) {  
70.                         resultBuffer.insert(commaOffset, ',');  
71.                         commaOffset -= 3;  
72.                 }  
73.           
74.                 if (suffix != null)  
75.                         resultBuffer.append(suffix);  
76.                 return resultBuffer.toString();  
77.         }  
78. }  

import java.io.File; import android.os.Environment; import android.os.StatFs; public class MemoryStatus { static final int ERROR = -1; static public boolean externalMemoryAvailable() { return android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED); } static public long getAvailableInternalMemorySize() { File path = Environment.getDataDirectory(); StatFs stat = new StatFs(path.getPath()); long blockSize = stat.getBlockSize(); long availableBlocks = stat.getAvailableBlocks(); return availableBlocks * blockSize; } static public long getTotalInternalMemorySize() { File path = Environment.getDataDirectory(); StatFs stat = new StatFs(path.getPath()); long blockSize = stat.getBlockSize(); long totalBlocks = stat.getBlockCount(); return totalBlocks * blockSize; } static public long getAvailableExternalMemorySize() { if(externalMemoryAvailable()) { File path = Environment.getExternalStorageDirectory(); StatFs stat = new StatFs(path.getPath()); long blockSize = stat.getBlockSize(); long availableBlocks = stat.getAvailableBlocks(); return availableBlocks * blockSize; } else { return ERROR; } } static public long getTotalExternalMemorySize() { if(externalMemoryAvailable()) { File path = Environment.getExternalStorageDirectory(); StatFs stat = new StatFs(path.getPath()); long blockSize = stat.getBlockSize(); long totalBlocks = stat.getBlockCount(); return totalBlocks * blockSize; } else { return ERROR; } } static public String formatSize(long size) { String suffix = null; if (size >= 1024) { suffix = "KiB"; size /= 1024; if (size >= 1024) { suffix = "MiB"; size /= 1024; } } StringBuilder resultBuffer = new StringBuilder(Long.toString(size)); int commaOffset = resultBuffer.length() - 3; while (commaOffset > 0) { resultBuffer.insert(commaOffset, ','); commaOffset -= 3; } if (suffix != null) resultBuffer.append(suffix); return resultBuffer.toString(); } }