Android版本检测\自动更新(6)

                Log.e(TAG, "getDataSource() error: " + ex.getMessage(), ex);  
            }  
        }  
    }  
    private void openFile(File f) {  
        Intent intent = new Intent();  
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);  
        intent.setAction(android.content.Intent.ACTION_VIEW);  
        String type = getMIMEType(f);  
        intent.setDataAndType(Uri.fromFile(f), type);  
        activity.startActivity(intent);  
    }  
    public void delFile() {  
        Log.i(TAG, "The TempFile(" + currentTempFilePath + ") was deleted.");  
        File myFile = new File(currentTempFilePath);  
        if (myFile.exists()) {  
            myFile.delete();  
        }  
    }  
    private String getMIMEType(File f) {  
        String type = "";  
        String fName = f.getName();  
        String end = fName  
                .substring(fName.lastIndexOf(".") + 1, fName.length())  
                .toLowerCase();  
        if (end.equals("m4a") || end.equals("mp3") || end.equals("mid")  
                || end.equals("xmf") || end.equals("ogg") || end.equals("wav")) {  
            type = "audio";  
        } else if (end.equals("3gp") || end.equals("mp4")) {  
            type = "video";  
        } else if (end.equals("jpg") || end.equals("gif") || end.equals("png")  
                || end.equals("jpeg") || end.equals("bmp")) {