更新下载回调过于频繁，所以改成百分比每提升1%才执行回调

android/app/src/main/java/com/bolan/android/modules/update/Updater.java

@@ -3,6 +3,7 @@ package com.bolan.android.modules.update;
 import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
+import android.os.Process;
 import android.util.Log;
 
 import com.bolan.android.modules.Utils;
@@ -74,17 +75,21 @@ public class Updater extends ReactContextBaseJavaModule {
                         is = connection.getInputStream();
                         fos = new FileOutputStream(apkFile);
                         int count = 0;
+                        int lastProgress = -1;
                         byte buf[] = new byte[1024 * 64];
                         WritableMap event;
                         do {
                             int numRead = is.read(buf);
                             count += numRead;
                             int progress = (int) (((float) count / length) * 100);
-                            event = Arguments.createMap();
-                            event.putInt("progress", progress);
-                            event.putInt("current", count);
-                            event.putInt("all", length);
-                            emit("Updater/downloading", event);
+                            if (progress != lastProgress) {
+                                lastProgress = progress;
+                                event = Arguments.createMap();
+                                event.putInt("progress", progress);
+                                event.putInt("current", count);
+                                event.putInt("all", length);
+                                emit("Updater/downloading", event);
+                            }
                             if (numRead <= 0) {
                                 event = Arguments.createMap();
                                 event.putInt("progress", progress);
@@ -107,7 +112,7 @@ public class Updater extends ReactContextBaseJavaModule {
                             return;
                         }
                         getCurrentActivity().startActivity(i);
-                        android.os.Process.killProcess(android.os.Process.myPid());
+                        Process.killProcess(Process.myPid());
                         promise.resolve(null);
                     } catch (MalformedURLException e) {
                         promise.reject("ERROR_UPDATE", "invalid url: " + sUrl);