Android之操作相簿

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擷取手機中的圖片的絕對路徑並且區分出每個檔案夾下的路徑：存放圖片絕對路徑的檔案夾的名字和存放絕對路徑的List 實體類如下：

 1 import java.util.ArrayList; 2 import java.util.List; 3  4 public class ImagePath { 5     private String pakagePath; 6     private List<String> listPth = new ArrayList<String>(); 7      8      9     public String getPakagePath() {10         return pakagePath;11     }12     public void setPakagePath(String pakagePath) {13         this.pakagePath = pakagePath;14     }15     public List<String> getListPth() {16         return listPth;17     }18     public void setListPth(List<String> listPth) {19         this.listPth = listPth;20     }21     22 }

將手機中的圖片絕對路徑按包名區分開：

 1     private ContentResolver contentResolver; 2     private Button button; 3     private Uri uri; 4     private List<ImagePath> imagePaths; 5 private List<ImagePath> getImgPath() { 6         imagePaths = new ArrayList<ImagePath>(); 7         contentResolver = this.getContentResolver(); 8         uri = Media.EXTERNAL_CONTENT_URI; 9         Cursor cursor = contentResolver.query(uri, null, null, null, null);10         Set<String> set = new TreeSet<String>();11         List<String> lsPsth = new ArrayList<String>();12         while (cursor.moveToNext()) {13             //擷取絕對路徑14             String path = cursor.getString(cursor.getColumnIndex(Media.DATA));15             //將絕對路徑添加到list中16             lsPsth.add(path);17             //擷取包名18             String pakageName = cursor.getString(cursor.getColumnIndex(Media.BUCKET_DISPLAY_NAME));19             //將包名添加到set中20             set.add(pakageName);21         }22         //set轉換成數組23         String[] str =set.toArray(new String[set.size()]);24         //迴圈裝有包名的數組25         for (int i = 0; i < str.length; i++) {26             //建立一個ImagePath對象，用於儲存某個包下的所有絕對路徑（包含包名）27             ImagePath imagePath = new ImagePath();28             //建立一個ImagePath對象，用於儲存某個包下的所有絕對路徑（不包含包名）29             List<String> listpath = new ArrayList<String>();30             //將str數組中的第一個包名存入到imagePath對象中31             imagePath.setPakagePath(str[i]);32             //迴圈lsPsth中的所有絕對路徑33             for (int k = 0; k < lsPsth.size(); k++) {34                 //判斷lsPathget(k)當前這條絕對路徑是否是str[i]包名下的絕對路徑35                 if(getPakageNameByPath(lsPsth.get(k)).equals(str[i])){36                     //如果是存入listpath中37                     listpath.add(lsPsth.get(k));38                 }39             }40             //將區分出來的對局路徑存入到對用的包名的imagePath對象中41             imagePath.setListPth(listpath);42             //將該對象存入imagePaths集合中43             imagePaths.add(imagePath);44         }45         return imagePaths;46     }

 1     /** 2      * 根據據對路徑擷取該路徑的包名 3      * @param path 4      * @return 5      */ 6     public String getPakageNameByPath(String path){ 7         String pkgName = null; 8         if(path.length()>0){ 9             String[] str = path.split("/");10             pkgName = str[str.length-2];11         }12         return pkgName;13     }14     

 

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Android之操作相簿