Why am I getting a memory leak when I just do setContentView (R.layout.somelayout)?

in my onCreate (), I just use xml as a representation of the content for the activity. why am i getting a memory leak. Is this something I am doing wrong?

My xml just has 5 image buttons, with a stelstististable (selector) for each image button. each image is only 16 KB in size. (Thus, I use 10 images - the image with the pressed state and the image of the normal state for each button).

Nowhere in my work do I use LayoutInflator. Shouldn't an android recycle bimaps by itself when setting up the presentation of content from xml?

I get an error something like this:

02-17 09:18:39.797: ERROR/AndroidRuntime(372): Uncaught handler: thread main exiting due to uncaught exception 02-17 09:18:39.817: ERROR/AndroidRuntime(372): java.lang.RuntimeException: Unable to start activity ComponentInfo{***.***.*****.activity/***.***.*****.home.HomeScreenActivity}: android.view.InflateException: Binary XML file line #2: Error inflating class java.lang.reflect.Constructor 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2401) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at android.app.ActivityThread.access$2100(ActivityThread.java:116) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at android.os.Handler.dispatchMessage(Handler.java:99) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at android.os.Looper.loop(Looper.java:123) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at android.app.ActivityThread.main(ActivityThread.java:4203) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at java.lang.reflect.Method.invokeNative(Native Method) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at java.lang.reflect.Method.invoke(Method.java:521) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at dalvik.system.NativeStart.main(Native Method) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class java.lang.reflect.Constructor 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at android.view.LayoutInflater.createView(LayoutInflater.java:512) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:562) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at android.view.LayoutInflater.inflate(LayoutInflater.java:385) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at android.view.LayoutInflater.inflate(LayoutInflater.java:320) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at android.view.LayoutInflater.inflate(LayoutInflater.java:276) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:313) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at android.app.Activity.setContentView(Activity.java:1620) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at ***.***.*****.home.HomeScreenActivity.onCreate(HomeScreenActivity.java:35) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2364) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): ... 11 more 02-17 09:18:39.817: ERROR/AndroidRuntime(372): Caused by: java.lang.reflect.InvocationTargetException 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at android.widget.RelativeLayout.<init>(RelativeLayout.java:171) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at java.lang.reflect.Constructor.constructNative(Native Method) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at java.lang.reflect.Constructor.newInstance(Constructor.java:446) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at android.view.LayoutInflater.createView(LayoutInflater.java:499) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): ... 21 more 02-17 09:18:39.817: ERROR/AndroidRuntime(372): Caused by: java.lang.OutOfMemoryError: bitmap size exceeds VM budget 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:439) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:322) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:688) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at android.content.res.Resources.loadDrawable(Resources.java:1710) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at android.content.res.TypedArray.getDrawable(TypedArray.java:548) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at android.view.View.<init>(View.java:1846) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at android.view.View.<init>(View.java:1795) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): at android.view.ViewGroup.<init>(ViewGroup.java:282) 02-17 09:18:39.817: ERROR/AndroidRuntime(372): ... 25 more 

I replaced the images, and the code worked without the application freezing, but stikll my ddms log went crazy with the following errors:

 02-17 09:18:37.287: ERROR/(372): VM won't let us allocate 270000 bytes 02-17 09:18:37.287: ERROR/dalvikvm-heap(372): 270000-byte external allocation too large for this process. 02-17 09:18:37.287: ERROR/(372): VM won't let us allocate 270000 bytes 02-17 09:18:37.287: ERROR/dalvikvm-heap(372): 270000-byte external allocation too large for this process. 02-17 09:18:37.287: ERROR/(372): VM won't let us allocate 270000 bytes 02-17 09:18:37.287: ERROR/dalvikvm-heap(372): 270000-byte external allocation too large for this process. 02-17 09:18:37.287: ERROR/(372): VM won't let us allocate 270000 bytes 02-17 09:18:37.287: ERROR/dalvikvm-heap(372): 264600-byte external allocation too large for this process. 

..,,,.

Although the application works, I would like to know what I am doing wrong. or is it a bug in the buggy android system?

with code:

 public class VirtualHomeActivity extends Activity { ImageButton imgbtn1, imgbtn2, imgbtn3, imgbtn4, imgbtn5; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.home); } } 

layout home.xml:

 <?xml version="1.0" encoding="UTF-8"?> <RelativeLayout android:id="@+id/RelativeLayout01" android:layout_width="fill_parent" android:layout_height="fill_parent" xmlns:android="http://schemas.android.com/apk/res/android" android:layoutAnimation="@anim/home_screen_animation_controller" android:background="@drawable/bg_application"> <ImageButton android:id="@+id/imgBtn1" android:layout_width="340dip" android:scaleType="fitCenter" android:layout_height="100dip" android:layout_marginLeft="20dip" android:layout_marginTop="5dip" android:background="@drawable/custombutton1"></ImageButton> <ImageButton android:layout_below="@id/imgBtn1" android:id="@+id/imgBtn2" android:layout_width="340dip" android:scaleType="fitCenter" android:layout_height="100dip" android:layout_marginTop="5dip" android:layout_marginLeft="20dip" android:background="@drawable/custombutton2"></ImageButton> <ImageButton android:layout_below="@id/imgBtn2 android:id="@+id/imgBtn3" android:scaleType="fitCenter" android:layout_width="340dip" android:layout_height="100dip" android:layout_marginLeft="20dip" android:layout_marginTop="5dip" android:background="@drawable/custombutton3"></ImageButton> <ImageButton android:layout_below="@id/imgBtnS3" android:id="@+id/imgBtn4" android:scaleType="fitCenter" android:layout_height="100dip" android:layout_width="340dip" android:layout_marginLeft="20dip" android:layout_marginTop="5dip" android:background="@drawable/custombutton4"></ImageButton> <ImageButton android:layout_below="@id/imgBtn4" android:id="@+id/imgBtn5" android:scaleType="fitCenter" android:layout_height="100dip" android:layout_width="340dip" android:layout_marginLeft="20dip" android:layout_marginTop="5dip" android:background="@drawable/custombutton5"></ImageButton> </RelativeLayout> 

and selector: (custombutton1.xml)

 <?xml version="1.0" encoding="UTF-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:state_pressed="true" android:drawable="@drawable/img_clicked" /> <item android:drawable="@drawable/img_unclicked" /> </selector> 

I removed all other code from the activity to check if I was creating a memory leak. But here I jsut set the content view as my layout file, and yet my ddms say that the VM will not allow us to allocate 270,000 bytes

I don’t think I tried to manage the activity life cycles here.

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1 answer

A memory leak might be somewhere else, perhaps in the way you manage life cycle changes in an activity. Take a look at Avoid Memory Leaks .

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Source: https://habr.com/ru/post/1343281/


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