解决下载存储apk在data/data目录下导致的apk安装解析出错问题

app/src/main/java/com/gh/common/util/FileUtils.java

@@ -46,7 +46,7 @@ public class FileUtils {
 					}
 				} catch (IOException e) {
 					e.printStackTrace();
-					//cannot create file
+					// cannot create file
 					Utils.log("cannot create file");
 					dir = null;
 				}
@@ -55,6 +55,11 @@ public class FileUtils {
 		if (dir == null) {
 			String baseDir = context.getFilesDir().getAbsolutePath();
 			dir = checkDir(baseDir + File.separator + "gh-download");
+			try {
+				Runtime.getRuntime().exec("chmod 755 " + dir);
+			} catch (IOException e) {
+				e.printStackTrace();
+			}
 		}
 		return dir;
 	}
@@ -81,7 +86,10 @@ public class FileUtils {
 	
 	private static String checkDir(String dir) {
 		File directory = new File(dir);
-		if (!directory.exists() || !directory.isDirectory()) {
+		if (directory.exists() && !directory.isDirectory()) {
+			directory.delete();
+		}
+		if (!directory.exists()) {
 			directory.mkdirs();
 		}
 		return dir;