react-native APP更新(非热更新)

   当react-native项目中有版本更新需求时，android会用到下载新版本需求，此时，可以通过封装Native Modules 去调用android原生DownloadManager来实现下载，传输下载APK链接地址实现覆盖安装

在android->app->src->main->java->你的包名(com.test.app) 新建3个类

1.DownloadApk.java

package com.test.app;

import android.app.DownloadManager;

import android.app.DownloadManager.Request;

import android.content.Context;

import android.app.Activity;

import android.content.SharedPreferences;

import android.net.Uri;

import android.os.Environment;

import com.facebook.react.bridge.ReactApplicationContext;

import com.facebook.react.bridge.ReactContextBaseJavaModule;

import com.facebook.react.bridge.ReactMethod;

public class DownloadApk extends ReactContextBaseJavaModule{

DownloadManager downManager ;

Activity myActivity;

public DownloadApk(ReactApplicationContext reactContext) {

super(reactContext);

}

@Override

public boolean canOverrideExistingModule() {

return true;

}

@Override

public String getName(){

return "DownloadApk";

}

@ReactMethod

public void downloading(String url,String description){

myActivity =getCurrentActivity();

downManager = (DownloadManager)myActivity.getSystemService(Context.DOWNLOAD_SERVICE);

Uri uri = Uri.parse(url);

DownloadManager.Request request = new Request(uri);

request.setAllowedNetworkTypes(Request.NETWORK_WIFI);

//设置通知栏标题

request.setNotificationVisibility(Request.VISIBILITY_VISIBLE);

request.setMimeType("application/vnd.android.package-archive");

request.setTitle("weiling");

if(description==null||"".equals(description)){

description="目标apk正在下载";

}

request.setDescription(description);

request.setAllowedOverRoaming(false);

//设置文件存放目录

request.setDestinationInExternalFilesDir(myActivity, Environment.DIRECTORY_DOWNLOADS, description);

long downloadid=downManager.enqueue(request);

SharedPreferences sPreferences = myActivity.getSharedPreferences("ggfw_download", 0);

sPreferences.edit().putLong("ggfw_download_apk", downloadid).commit();

}

}

2.DownloadApkPackage.java

package com.test.app;

import com.facebook.react.ReactPackage;

import com.facebook.react.bridge.JavaScriptModule;

import com.facebook.react.bridge.NativeModule;

import com.facebook.react.bridge.ReactApplicationContext;

import com.facebook.react.uimanager.ViewManager;

import java.util.List;

import java.util.Collections;

import java.util.ArrayList;

public class DownloadApkPackage implements ReactPackage {

List modules=new ArrayList<>();

@Override    

public List createNativeModules(ReactApplicationContext reactContext) {

modules.add(new DownloadApk(reactContext));

return modules;

}

@Override  

public List> createJSModules() {

return Collections.emptyList();

}

@Override   

public List createViewManagers(ReactApplicationContext reactContext) {

return Collections.emptyList();

}

}

3.DownLoadBroadcastReceiver.java

package com.test.app;

import android.app.DownloadManager;

import android.content.BroadcastReceiver;

import android.content.Context;

import android.content.Intent;

import android.content.SharedPreferences;

import android.database.Cursor;

import android.net.Uri;

import android.os.Environment;

import android.util.Log;

import android.widget.Toast;

import java.io.File;

public class DownLoadBroadcastReceiver extends BroadcastReceiver {

@Override

public void onReceive(Context context, Intent intent) {

long myDwonloadID = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -1);

SharedPreferences sPreferences = context.getSharedPreferences("ggfw_download", 0);

long refernece = sPreferences.getLong("ggfw_download_apk", 0);

if (refernece == myDwonloadID) {

DownloadManager dManager = (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE);

Intent install = new Intent(Intent.ACTION_VIEW);

//            Uri downloadFileUri = dManager.getUriForDownloadedFile(myDwonloadID);

DownloadManager.Query querybyId = new DownloadManager.Query();

querybyId.setFilterById(myDwonloadID);

Cursor myDownload = dManager.query(querybyId);

String dolownname=null;

if(myDownload.moveToFirst()){

int status = myDownload.getInt(myDownload.getColumnIndex(DownloadManager.COLUMN_STATUS));

if (status == DownloadManager.STATUS_SUCCESSFUL) {

// process download

int fileNameIdx = myDownload.getColumnIndex(DownloadManager.COLUMN_LOCAL_FILENAME);

//此处取得的是完整路径+文件名称

dolownname=myDownload.getString(fileNameIdx);

}else{

Toast.makeText(context,"下载失败，删除残留文件",Toast.LENGTH_LONG).show();

dManager.remove(myDwonloadID);

myDownload.close();

return;

}

myDownload.close();

}

if(dolownname==null){

return;

}

File file = new File(dolownname);

install.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive");

install.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

context.getApplicationContext().startActivity(install);

}}}

记得在AndroidManifest.xml中注册广播监听

记得在MainApplication中增加调用new DownloadApkPackage(),

然后在APP首页进去加载判断是否更新：第一个参数APK下载地址，第二个参数APK下载时候命名

NativeModules.DownloadApk.downloading(this.state.downUrl,"weiling.apk"),

OK就可以看到APK下载成功了，