内存泄漏 - 多个活动实例
我有几项活动。
该应用程序内存不足。我尝试gc.clean()在所有活动中（onDestroy），空引用，launchMode="singleTop"但没有任何成功。
在MAT中，我发现我有多个具有相同活动的对象，如果我没弄错的话，这是默认行为。
例如，在第一次启动时，我将进行主要活动，如果我退出并再次启动，我将有2个实例。
这会使VM增长，直到显示强制关闭对话框。
我的代码示例：
public class Splash extends Activity
{
private static Handler handler;
private static Thread splashThread;
private MyProgressDialog dialog;
private Netroads netroads;
private int debug;
private AsyncTask<Void,Void,Void> mConnectionTask;
private boolean checkInternetConnection = false;
private SharedPreferences ref;
private SharedPreferences.Editor ed;
private boolean firstOperationKey = false;
private boolean userPay = false;
private String macAddress = "";
private String answer = "";
private String extra = "";
private int status = Consts.STATUS_SERVER_BUSY;
private String paymentType = "";
private boolean paymentStatus = false;
private String versionName = "";
private RelativeLayout splash_layout;
private RelativeLayout welcome_message_layout;
private TextView welcome_message_text;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.splash_layout);
getWindow().setLayout(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);
netroads = ((Netroads)getApplicationContext());
ref = getSharedPreferences("NETROADS",MODE_PRIVATE);
ed = ref.edit();
//ed.putString("userID","2");
//ed.putBoolean("LOGOUT",false);
//ed.commit();
//change background by LANGUAGEMODENUMBER
splash_layout = (RelativeLayout)findViewById(R.id.splash_layout);
welcome_message_layout = (RelativeLayout)findViewById(R.id.welcome_message_layout);
//welcome_message_layout = new RelativeLayout(getApplicationContext());
welcome_message_text = (TextView)findViewById(R.id.welcome_message_text);
//welcome_message_text = new TextView(getApplicationContext().);
if(ref.getBoolean("LANGUAGEMODECHANGE",false))
{
welcome_message_layout.setBackgroundResource(R.drawable.welcome_message);
welcome_message_text.setText(getString(R.string.welcome));
switch(ref.getInt("LANGUAGEMODENUMBER",Consts.DEFAULT))
{
case Consts.HEBREW:
splash_layout.setBackgroundResource(R.drawable.welcome_hebrew);
break;
case Consts.ENGLISH:
splash_layout.setBackgroundResource(R.drawable.welcome_english);
break;
case Consts.RUSSIAN:
splash_layout.setBackgroundResource(R.drawable.welcome_russian);
break;
case Consts.ARABIC:
splash_layout.setBackgroundResource(R.drawable.welcome_arabic);
break;
default:
splash_layout.setBackgroundResource(R.drawable.bg);
break;
}//close switch
}
if(ref.getBoolean("LANGUAGEMODECHANGE",false))
{
ed.putBoolean("LANGUAGEMODECHANGE",false);
ed.commit();
}
WifiManager wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
if(wifiManager.isWifiEnabled())
{
WifiInfo info = wifiManager.getConnectionInfo();
macAddress = info.getMacAddress();
}
else
{
wifiManager.setWifiEnabled(true);
WifiInfo info = wifiManager.getConnectionInfo();
macAddress = info.getMacAddress();
wifiManager.setWifiEnabled(false);
}
PackageInfo pinfo;
try {
pinfo = getPackageManager().getPackageInfo(getPackageName(), 0);
versionName = pinfo.versionName;
} catch (NameNotFoundException e) {
e.printStackTrace();
}
handler = new Handler();
splashThread = (Thread) getLastNonConfigurationInstance();
if (splashThread != null && splashThread.isAlive())
{
dialog = MyProgressDialog.show(this,"","");
}
}//close onCreate
public void onResume()
{
super.onResume();
debug = 0;
if(debug == 1)
{
Intent intent = new Intent(Splash.this, Main.class);
startActivity(intent);
Splash.this.finish();
}
else
{
dialog = MyProgressDialog.show(this,"","");
if(netroads.checkGPS(Splash.this))
{
mConnectionTask = new AsyncTask<Void, Void, Void>()
{
@Override
protected Void doInBackground(Void... params)
{
for(int i=0;i<3;i++)
{
HttpGet requestForTest = new HttpGet("http://m.google.com");
try
{
new DefaultHttpClient().execute(requestForTest);
checkInternetConnection = true;
}
catch (Exception e)
{
checkInternetConnection = false;
}
}
return null;
}
@Override
protected void onPostExecute(Void result)
{
dialog.dismiss();
mConnectionTask = null;
if(checkInternetConnection)
{
dialog = MyProgressDialog.show(Splash.this,"","");
startSplashThread();
}
else
{
netroads.showRegularDialog(getString(R.string.connection_problem), getString(R.string.internet_connection_problem), getString(R.string.ok), Splash.this);
}
}
};
mConnectionTask.execute(null, null, null);
}
else
{
dialog.dismiss();
netroads.showGPSAlert(Splash.this);
}
}
}//close onResume
public void startSplashThread()
{
splashThread = new splashThread();
splashThread.start();
}//close splashThread
// Save the thread
@Override
public Object onRetainNonConfigurationInstance() {
return splashThread;
}
@Override
protected void onDestroy()
{
super.onDestroy();
if (dialog != null)
{
dialog.dismiss();
dialog = null;
}
netroads.unbindDrawables(findViewById(R.id.splash_layout));
System.gc();
}//close onDestroy
public class splashThread extends Thread
{
@Override
public void run()
{
try
{
if(ConnectionDetector.checkInternetConnection())
{
if(ref.getString("userID","").equalsIgnoreCase("") || ref.getBoolean("LOGOUT",false))
firstOperationKey = true; //first operation after download from google play
else
{
checkUserActive();
netroads.getUsersCount(Splash.this);
}
handler.post(new splashRunnable());
}
}
finally
{
splashThread.interrupt();
}
}
}//close splashThread
public class splashRunnable implements Runnable
{
public void run()
{
dialog.dismiss();
if(firstOperationKey)
{
Intent intent = new Intent(Splash.this,AppDescription.class);
startActivity(intent);
finish();
}
else if(status == Consts.STATUS_OPERATION_SUCCESSFUL)
{
if(netroads.answerFromServerIsOK(answer))
{
Intent intent = new Intent(Splash.this,Main.class);
startActivity(intent);
finish();
}
else
{
Log.e(Consts.TAG,"STATUS = OK, ANSWER = -2 (CLEAR SESSION)");
clearSession();
}
}
else if(status == Consts.STATUS_USER_UNEXISTS)
{
clearSession();
}
else
{
netroads.answerFromServerIsOK(answer);
netroads.serverException(Splash.this,status);
}
}
}//close splashRunnable
public void clearSession()
{
ed.putBoolean("LOGOUT",true);
ed.commit();
startSplashThread();
}//close clearSession
public boolean checkUserActive()
{
Log.e(Consts.TAG,"checkUserActive()");
String url = new String(Consts.SERVER + "checkUserActive");
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url);
try
{
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("userID",ref.getString("userID","")));
nameValuePairs.add(new BasicNameValuePair("MAC",macAddress));
httppost.addHeader("appPassword",Consts.APP_PASSWORD);
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs,"UTF-8"));
HttpResponse response = httpclient.execute(httppost);
HttpEntity httpEntity = response.getEntity();
String xmlString = EntityUtils.toString(httpEntity);
Log.d(Consts.TAG,xmlString);
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder db = factory.newDocumentBuilder();
InputSource inStream = new InputSource();
inStream.setCharacterStream(new StringReader(xmlString));
Document doc = db.parse(inStream);
NodeList nodeList;
boolean normalize = false;
try
{
doc.getDocumentElement().normalize();
nodeList = doc.getElementsByTagName("Client");
normalize = true;
}
catch(Exception e)
{
nodeList = null;
}
if(normalize)
if(nodeList.getLength() > 0)
{
for(int i=0; i < nodeList.getLength(); i++)
{
Node node = nodeList.item(i);
Element firstElement = (Element) node;
try{
NodeList myNodeList = firstElement.getElementsByTagName("userID");
Element myElement = (Element)myNodeList.item(0);
myNodeList = myElement.getChildNodes();
Log.d(Consts.TAG,"checkUserActive - userID:"+myNodeList.item(0).getNodeValue());
myNodeList = firstElement.getElementsByTagName("status");
myElement = (Element)myNodeList.item(0);
myNodeList = myElement.getChildNodes();
status = Integer.parseInt(myNodeList.item(0).getNodeValue());
myNodeList = firstElement.getElementsByTagName("answer");
myElement = (Element)myNodeList.item(0);
myNodeList = myElement.getChildNodes();
answer = myNodeList.item(0).getNodeValue();
myNodeList = firstElement.getElementsByTagName("extra");
myElement = (Element)myNodeList.item(0);
myNodeList = myElement.getChildNodes();
extra = myNodeList.item(0).getNodeValue();
Netroads.paymentKey = extra;
}catch(Exception e){e.printStackTrace();}
}//close for
return true;
}//close if
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (ParserConfigurationException e) {
e.printStackTrace();
} catch (SAXException e) {
e.printStackTrace();
}
return false;
}//close checkUserActive
@Override
protected void onActivityResult(int requestCode,int resultCode, Intent data)
{
super.onActivityResult(requestCode, resultCode, data);
//if user is google play, paypal,...
if(resultCode == Consts.PAYMENT_STATUS_IAP)
{
Log.e(Consts.TAG,"onActivityResult() - Splash");
try
{
paymentStatus = data.getExtras().getBoolean("paymentStatus");
}
catch(Exception e){paymentStatus = false;}
if(paymentStatus)
{
paymentType = data.getExtras().getString("paymentType");
netroads.startSetUser(Splash.this,paymentType,"1","2",macAddress,versionName,ref.getString("userID",""));//TODO Chane to auto function
}
else
{
netroads.showRegularDialog(getString(R.string.netroads_server),getString(R.string.user_cancel_purchase),getString(R.string.ok),Splash.this);
}
}
}//close onActivityResult
}//close Splash
泄漏在哪里？
修改
以下是照片：
2 个答案:
答案 0 :(得分：-1)
是否可以与未发布上下文引用的WifiManager相关联？ http://code.google.com/p/android/issues/detail?id=43945
答案 1 :(得分：-2)
我想你可能会以错误的方式看待它。
什么是撞车？它是否会导致splash_layout.setBackgroundResource（...）调用之一？
如果是，您的图像可能太大（它们的重量是多少？）。 如果是这种情况，您应该考虑调整图像大小，然后查看http://developer.android.com/training/displaying-bitmaps/load-bitmap.html
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