Java http请求回调是否内存泄漏?
我的应用有严重的问题,因为它的内存泄漏。 应用程序(服务)每30秒循环一次,下载数据并将其放入数据库。 我正在使用一个回调侦听器,它似乎正在泄漏内存,与库无关,因为我尝试了volley和httpok,我唯一的猜测是它实际上是dbhelper。我想我必须在代码的某个地方使用weakreference,我尝试过,当我将请求本身重构到另一个类时,我也尝试过WeakHashMap,但仍然没有成功。我尝试隔离可运行处理程序(我现在正在使用weakhandler库),但仍然没有成功:( 这是一个呼救,我写了4天相同版本的代码Java http请求回调是否内存泄漏?,java,android,memory-leaks,runnable,weak-references,Java,Android,Memory Leaks,Runnable,Weak References,我的应用有严重的问题,因为它的内存泄漏。 应用程序(服务)每30秒循环一次,下载数据并将其放入数据库。 我正在使用一个回调侦听器,它似乎正在泄漏内存,与库无关,因为我尝试了volley和httpok,我唯一的猜测是它实际上是dbhelper。我想我必须在代码的某个地方使用weakreference,我尝试过,当我将请求本身重构到另一个类时,我也尝试过WeakHashMap,但仍然没有成功。我尝试隔离可运行处理程序(我现在正在使用weakhandler库),但仍然没有成功:( 这是一个呼救,我写了
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import com.badoo.mobile.util.WeakHandler;
import java.io.IOException;
import java.util.Map;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
import prefs.Settings;
import tools.DBHelper;
public class tempclass extends Service {
private dbhelperFortempclass dbHelper;
private WeakHandler mHandler;
private Runnable runnable;
private OkHttpClient okHttpClient;
public tempclass() {
}
@Override
public void onCreate() {
super.onCreate();
dbHelper = dbhelperFortempclass.getInstance(); //инциируем sql
mHandler = new WeakHandler();
okHttpClient = new OkHttpClient();
executeDownloadsAndWriteToDataBase();
}
public void onDestroy() {
super.onDestroy();
}
public int onStartCommand(Intent intent, int flags, int startId) {
return super.onStartCommand(intent, flags, startId);
}
public IBinder onBind(Intent arg0) {
return null;
}
private void executeDownloadsAndWriteToDataBase() {
runnable = new Runnable() {
@Override
public void run() {
try {
downloadData();
mHandler.postDelayed(this, 1000);
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
} finally {
//also call the same runnable
mHandler.postDelayed(this, 20000);
}
}
};
mHandler.postDelayed(runnable, 30000);
}
private void downloadData() throws IOException {
for (Map.Entry<String, Settings.ListofCurrencies> entry : Settings.MyCurrencyList.entrySet()) {
DownloadAndWriteToDBExecute(entry.getKey());
}
}
public void DownloadAndWriteToDBExecute(final String whatToGet) {
Request request = new Request.Builder().url(whatToGet).build();
Call call = okHttpClient.newCall(request);
call.enqueue(new Callback() {
@Override
public void onFailure(Request request, IOException e) {
//logger.log(Level.SEVERE, "Failed to execute " + request, e);
}
@Override
public void onResponse(Response response) throws IOException {
if (response.isSuccessful()) {
DBHelper.execSQL("sql code");
} else throw new IOException("Unexpected code " + response);
}
});
}
}
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
public class dbhelperFortempclass {
private static SQLiteDatabase mydb;
private static Context myContext;
private static dbhelperFortempclass dbHelper = null;
protected dbhelperFortempclass() {
}
public static dbhelperFortempclass getInstance() {
if (dbHelper == null) {
myContext = MainActivity.getAppContext();
dbHelper = new dbhelperFortempclass();
}
return dbHelper;
}
public static void execSQL(String cmd) {
mydb.execSQL(cmd);
}
}
导入android.app.Service;
导入android.content.Intent;
导入android.os.IBinder;
导入com.badoo.mobile.util.WeakHandler;
导入java.io.IOException;
导入java.util.Map;
导入okhttp3.Call;
导入okhttp3.Callback;
导入okhttp3.OkHttpClient;
导入okhttp3.请求;
导入okhttp3.响应;
导入优先设置;
导入tools.DBHelper;
公共类tempclass扩展服务{
私有dbhelperFortempclass dbHelper;
私人韦坎德勒·姆汉德勒;
私人可运行;
私人OkHttpClient OkHttpClient;
公共临时班(){
}
@凌驾
public void onCreate(){
super.onCreate();
dbHelper=dbhelperFortempclass.getInstance();//
mHandler=新的WeakHandler();
okHttpClient=新的okHttpClient();
Executedownloads和WriteToDatabase();
}
公共空间{
super.ondestory();
}
公共int onStartCommand(Intent Intent、int标志、int startId){
返回super.onStartCommand(intent、flags、startId);
}
公共IBinder onBind(意图arg0){
返回null;
}
private void Executedownloads和WriteToDatabase(){
runnable=新的runnable(){
@凌驾
公开募捐{
试一试{
下载数据();
mHandler.postDelayed(这个,1000);
}捕获(例外e){
//TODO:处理异常
e、 printStackTrace();
}最后{
//也可以调用相同的runnable
mHandler.postDelayed(这一数字为20000);
}
}
};
mHandler.postDelayed(可运行,30000);
}
私有void downloadData()引发IOException{
对于(Map.Entry:Settings.MyCurrencyList.entrySet()){
DownloadAndWriteToDBExecute(entry.getKey());
}
}
public void DownloadAndWriteToDBExecute(最终字符串WhatGet){
Request Request=newrequest.Builder().url(whatToGet.build();
Call Call=okHttpClient.newCall(请求);
call.enqueue(新回调(){
@凌驾
公共void onFailure(请求,IOE异常){
//logger.log(严重级别,“无法执行”+请求,e);
}
@凌驾
public void onResponse(Response-Response)引发IOException{
if(response.issusccessful()){
DBHelper.execSQL(“sql代码”);
}否则抛出新IOException(“意外代码”+响应);
}
});
}
}
导入android.content.Context;
导入android.database.sqlite.SQLiteDatabase;
公共类dbhelperFortempclass{
私有静态数据库mydb;
私有静态上下文myContext;
私有静态dbhelperFortempclass dbHelper=null;
受保护的dbhelperFortempclass(){
}
公共静态dbhelperFortempclass getInstance(){
if(dbHelper==null){
myContext=MainActivity.getAppContext();
dbHelper=新的dbhelperFortempclass();
}
返回dbHelper;
}
公共静态void execSQL(字符串cmd){
mydb.execSQL(cmd);
}
}
为什么您认为内存泄漏?我使用了android内存监视器,应用程序的内存从9mb增加到100 MB,然后崩溃)
private void executeDownloadsAndWriteToDataBase() {
runnable = null; //this is what was reason for the memory leak, the runnable was recreating itself
runnable = new Runnable() {
@Override
public void run() {
try {
downloadData();
mHandler.postDelayed(this, 1000);
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
} finally {
//also call the same runnable
mHandler.postDelayed(this, 20000);
}
}
};
mHandler.postDelayed(runnable, 30000);
}