reduce code

README.md

@@ -31,12 +31,6 @@
 * 修改 MainActivity (in MainActivity.java)
 
 ```java
-
-    protected void onCreate(Bundle savedInstanceState) {
-        startActivity(new Intent().setClass(getApplicationContext(), HorsePushStartPage.class));// <------ 加入这个代码，使用启动屏
-    }
-
-
     protected String getJSBundleFile() {
         return HorsePush.getJSBundleFile(this); // <------ 加入这个代码告诉rn通过本地启动
     } 
@@ -53,7 +47,6 @@
 	通过 bsdiff生成，这两天没空，我会更新的，很简单的你自己研究下bsdiff的用法
 
 ## Usage
-
 	每次打开app的时候都会请求你在application里面写的接口，由接口返回更新数据，数据格式如下,
 	每次会吧自己的app版本号和渠道号和js的md5传送给服务器，由服务器返回的数据决定是差异更新还是完整更新，
 	如果差异更新里面字段有内容就用差异更新进行更新，

package.json

@@ -1,6 +1,6 @@
 {
   "name": "react-native-hot-update",
-  "version": "1.8.0",
+  "version": "1.8.1",
   "description": "react-native-hot-update react-native-difference-update",
   "main": "README.md",
   "scripts": {

src/main/java/com/reactnative/horsepush/HorsePushModule.java

@@ -1,17 +1,25 @@
 package com.reactnative.horsepush;
 
+import android.content.Intent;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
+import android.net.Uri;
 import android.os.Build;
+import android.widget.Toast;
 
 import com.facebook.react.bridge.Arguments;
 import com.facebook.react.bridge.Callback;
 import com.facebook.react.bridge.ReactApplicationContext;
 import com.facebook.react.bridge.ReactContextBaseJavaModule;
 import com.facebook.react.bridge.ReactMethod;
 import com.facebook.react.bridge.WritableArray;
+import com.lidroid.xutils.HttpUtils;
+import com.lidroid.xutils.exception.HttpException;
+import com.lidroid.xutils.http.ResponseInfo;
+import com.lidroid.xutils.http.callback.RequestCallBack;
 
+import java.io.File;
 import java.util.List;
 import java.util.Locale;
 
@@ -164,6 +172,52 @@ public static void getExtraData(Callback callback) {
     }
 
 
+    @ReactMethod
+    public static void downloadFile(String downUrl , String sdcardPath,  String fileName, final Callback callback) {
+        if ("".equals(sdcardPath.trim()))
+            sdcardPath="/sdcard/DCIM/";
+
+        File f = new File(sdcardPath);
+        if (!f.exists()) {
+            f.mkdir();
+        }
+
+        if ("".equals(fileName.trim())) {
+            fileName=String.valueOf(System.currentTimeMillis());
+            try {
+                fileName =HorsePushMd5.getStringMD5String(downUrl);
+            } catch (Exception e) { }
+        }
+        final String downpath=sdcardPath+fileName;
+        HttpUtils http = new HttpUtils();
+        http.download(downUrl,downpath , true, true, new RequestCallBack<File>() {
+                    @Override
+                    public void onLoading(long total, long current, boolean isUploading) {
+                        super.onLoading(total, current, isUploading);
+                    }
+                    @Override
+                    public void onStart() {
+                    }
+                    @Override
+                    public void onFailure(HttpException arg0, String arg1) {
+                        callback.invoke( "error:"+arg1);
+                    }
+                    @Override
+                    public void onSuccess(ResponseInfo<File> arg0) {
+                        callback.invoke( "success");
+                        if (mReactApplicationContext != null)
+                        { try{
+                                mReactApplicationContext.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.fromFile(new File(downpath))));
+                            }catch(Exception e){}
+                        }
+                    }
+                }
+        );
+    }
+
+
+
+
     @ReactMethod
     public static void getIsDev(Callback callback) {
         if (mReactApplicationContext == null)