我正在尝试在一个活动中实现分页，但是我的内存不足。该应用程序运行到第4页，但当它到达第5页时它会崩溃。我已经尝试过增加JVM堆大小，但是应用程序仍然会崩溃，因为它耗尽内存以进行分配。
这是我的主要文件：
public class S1Intro extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_s1);
MyPagerAdapter adapter = new MyPagerAdapter();
ViewPager myPager = (ViewPager) findViewById(R.id.intro_panels);
myPager.setAdapter(adapter);
myPager.setCurrentItem(0);
}
Intent intent = new Intent(S1Intro.this,S2CharacterIntro.class);
public void nextScreen(View view){
startActivity(intent);
}
这是PageAdapter类：
public class MyPagerAdapter extends PagerAdapter {
public int getCount() {
return 5;
}
public Object instantiateItem(View collection, int position) {
LayoutInflater inflater = (LayoutInflater) collection.getContext()
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
int resId = 0;
switch (position) {
case 0:
resId = R.layout.s1a;
break;
case 1:
resId = R.layout.s1b;
break;
case 2:
resId = R.layout.s1c;
break;
case 3:
resId = R.layout.s1d;
break;
case 4:
resId = R.layout.s1e;
break;
}
View view = inflater.inflate(resId, null);
((ViewPager) collection).addView(view, 0);
return view;
}
@Override
public void destroyItem(View arg0, int arg1, Object arg2) {
((ViewPager) arg0).removeView((View) arg2);
}
@Override
public boolean isViewFromObject(View arg0, Object arg1) {
return arg0 == ((View) arg1);
}
@Override
public Parcelable saveState() {
return null;
}
}
这是第一页的xml文件：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="@drawable/a"/>
</LinearLayout>
所有其他页面都是这样的，有不同的drawables。除了第5页，看起来像这样：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_screen2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.miniproject32.writeup.S1Intro">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="@drawable/e"/>
<Button
style="@style/buttonStyle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/button_s1"
android:text="@string/start"
android:onClick="nextScreen"/>
</RelativeLayout>
这是logcat：
03-30 12:17:31.866 498-498/? I/art: Starting a blocking GC Alloc
03-30 12:17:31.866 498-498/? I/art: Starting a blocking GC Alloc
03-30 12:17:31.896 498-498/? I/art: Alloc sticky concurrent mark sweep GC freed 1003(75KB) AllocSpace objects, 0(0B) LOS objects, 17% free, 74MB/89MB, paused 885us total 33.721ms
03-30 12:17:31.896 498-498/? I/art: Starting a blocking GC Alloc
03-30 12:17:31.906 1139-1139/? D/ResourcesManager: For user 0 new overlays fetched Null
03-30 12:17:31.916 498-498/? I/art: Alloc partial concurrent mark sweep GC freed 71(2848B) AllocSpace objects, 0(0B) LOS objects, 17% free, 74MB/90MB, paused 823us total 17.333ms
03-30 12:17:31.916 498-498/? I/art: Starting a blocking GC Alloc
03-30 12:17:31.946 498-498/? I/art: Alloc concurrent mark sweep GC freed 115(20KB) AllocSpace objects, 0(0B) LOS objects, 17% free, 74MB/90MB, paused 885us total 24.108ms
03-30 12:17:31.946 498-498/? I/art: Forcing collection of SoftReferences for 36MB allocation
03-30 12:17:31.946 498-498/? I/art: Starting a blocking GC Alloc
03-30 12:17:31.946 612-836/? D/ResourcesManager: For user 0 new overlays fetched Null
03-30 12:17:31.966 498-504/? W/art: Suspending all threads took: 19.805ms
03-30 12:17:31.966 498-498/? I/art: Alloc concurrent mark sweep GC freed 11(344B) AllocSpace objects, 0(0B) LOS objects, 17% free, 74MB/90MB, paused 1.434ms total 23.834ms
03-30 12:17:31.966 498-498/? W/art: Throwing OutOfMemoryError "Failed to allocate a 38125292 byte allocation with 16777216 free bytes and 21MB until OOM"
03-30 12:17:31.976 498-498/? I/art: Starting a blocking GC Alloc
03-30 12:17:31.976 498-498/? I/art: Starting a blocking GC Alloc
03-30 12:17:31.976 612-836/? D/ResourcesManager: For user 0 new overlays fetched Null
03-30 12:17:31.986 498-498/? I/art: Alloc sticky concurrent mark sweep GC freed 3(1264B) AllocSpace objects, 0(0B) LOS objects, 17% free, 74MB/90MB, paused 915us total 10.620ms
03-30 12:17:31.986 498-498/? I/art: Starting a blocking GC Alloc
03-30 12:17:31.986 612-612/? I/IntowowAdapter: not wifi, stop request intowow ad
03-30 12:17:31.996 498-498/? I/art: Alloc partial concurrent mark sweep GC freed 10(320B) AllocSpace objects, 0(0B) LOS objects, 17% free, 74MB/90MB, paused 885us total 13.458ms
03-30 12:17:31.996 498-498/? I/art: Starting a blocking GC Alloc
03-30 12:17:32.026 498-498/? I/art: Alloc concurrent mark sweep GC freed 3(96B) AllocSpace objects, 0(0B) LOS objects, 17% free, 74MB/90MB, paused 1.068ms total 25.024ms
03-30 12:17:32.026 498-498/? I/art: Forcing collection of SoftReferences for 36MB allocation
03-30 12:17:32.026 498-498/? I/art: Starting a blocking GC Alloc
03-30 12:17:32.056 498-498/? I/art: Alloc concurrent mark sweep GC freed 3(96B) AllocSpace objects, 0(0B) LOS objects, 17% free, 74MB/90MB, paused 885us total 24.536ms
03-30 12:17:32.056 498-498/? W/art: Throwing OutOfMemoryError "Failed to allocate a 38125292 byte allocation with 16777216 free bytes and 21MB until OOM"
03-30 12:17:32.056 498-498/? D/skia: --- allocation failed for scaled bitmap
03-30 12:17:32.056 612-612/? I/KBattery: [PLACE] at com.ijinshan.kbatterydoctor.cloud.NewRemoteCloudConfigHelper.b(NewRemoteCloudConfigHelper.java:600)
[NewRemoteCloudConfigHelper]isPackedNotification lastAid = 9
03-30 12:17:32.056 498-498/? E/InputEventReceiver: Exception dispatching input event.
03-30 12:17:32.066 498-498/? E/MessageQueue-JNI: Exception in MessageQueue callback: handleReceiveCallback
03-30 12:17:32.086 612-612/? I/Choreographer: Skipped 81 frames! The application may be doing too much work on its main thread.
03-30 12:17:32.096 498-498/? E/MessageQueue-JNI: java.lang.OutOfMemoryError: Failed to allocate a 38125292 byte allocation with 16777216 free bytes and 21MB until OOM
at dalvik.system.VMRuntime.newNonMovableArray(Native Method)
at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method)
at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:856)
at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:675)
at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:2230)
at android.content.res.Resources.loadDrawableForCookie(Resources.java:4279)
at android.content.res.Resources.loadDrawable(Resources.java:4153)
at android.content.res.Resources.loadDrawable(Resources.java:3998)
at android.content.res.TypedArray.getDrawable(TypedArray.java:886)
at android.widget.ImageView.<init>(ImageView.java:157)
at android.widget.ImageView.<init>(ImageView.java:145)
at android.support.v7.widget.AppCompatImageView.<init>(AppCompatImageView.java:60)
at android.support.v7.widget.AppCompatImageView.<init>(AppCompatImageView.java:56)
at android.support.v7.app.AppCompatViewInflater.createView(AppCompatViewInflater.java:106)
at android.support.v7.app.AppCompatDelegateImplV9.createView(AppCompatDelegateImplV9.java:1017)
at android.support.v7.app.AppCompatDelegateImplV9.onCreateView(AppCompatDelegateImplV9.java:1076)
at android.support.v4.view.LayoutInflaterCompatHC$FactoryWrapperHC.onCreateView(LayoutInflaterCompatHC.java:44)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:758)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:716)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:847)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:810)
at android.view.LayoutInflater.inflate(LayoutInflater.java:527)
at android.view.LayoutInflater.inflate(LayoutInflater.java:429)
at android.view.LayoutInflater.inflate(LayoutInflater.java:380)
at com.miniproject32.writeup.MyPagerAdapter.instantiateItem(MyPagerAdapter.java:40)
at android.support.v4.view.PagerAdapter.instantiateItem(PagerAdapter.java:111)
at android.support.v4.view.ViewPager.addNewItem(ViewPager.java:1038)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1252)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1120)
at android.support.v4.view.ViewPager$3.run(ViewPager.java:277)
at android.support.v4.view.ViewPager.completeScroll(ViewPager.java:2029)
at android.support.v4.view.ViewPager.onInterceptTouchEvent(ViewPager.java:2159)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2371)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2844)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2461)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2844)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2461)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2844)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2461)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2844)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2461)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2844)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2461)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2844)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2461)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2844)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2461)
at com.android.internal.policy.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2866)
at com.android.internal.policy.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1861)
at android.app.Activity.dispatchTouchEvent(Activity.java:3061)
at android.support.v7.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:67)
at com.android.internal.policy.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2827)
a
03-30 12:17:32.096 498-498/? D/AndroidRuntime: Shutting down VM
03-30 12:17:32.106 498-498/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.miniproject32.writeup, PID: 498
java.lang.OutOfMemoryError: Failed to allocate a 38125292 byte allocation with 16777216 free bytes and 21MB until OOM
at dalvik.system.VMRuntime.newNonMovableArray(Native Method)
at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method)
at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:856)
at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:675)
at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:2230)
at android.content.res.Resources.loadDrawableForCookie(Resources.java:4279)
at android.content.res.Resources.loadDrawable(Resources.java:4153)
at android.content.res.Resources.loadDrawable(Resources.java:3998)
at android.content.res.TypedArray.getDrawable(TypedArray.java:886)
at android.widget.ImageView.<init>(ImageView.java:157)
at android.widget.ImageView.<init>(ImageView.java:145)
at android.support.v7.widget.AppCompatImageView.<init>(AppCompatImageView.java:60)
at android.support.v7.widget.AppCompatImageView.<init>(AppCompatImageView.java:56)
at android.support.v7.app.AppCompatViewInflater.createView(AppCompatViewInflater.java:106)
at android.support.v7.app.AppCompatDelegateImplV9.createView(AppCompatDelegateImplV9.java:1017)
at android.support.v7.app.AppCompatDelegateImplV9.onCreateView(AppCompatDelegateImplV9.java:1076)
at android.support.v4.view.LayoutInflaterCompatHC$FactoryWrapperHC.onCreateView(LayoutInflaterCompatHC.java:44)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:758)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:716)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:847)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:810)
at android.view.LayoutInflater.inflate(LayoutInflater.java:527)
at android.view.LayoutInflater.inflate(LayoutInflater.java:429)
at android.view.LayoutInflater.inflate(LayoutInflater.java:380)
at com.miniproject32.writeup.MyPagerAdapter.instantiateItem(MyPagerAdapter.java:40)
at android.support.v4.view.PagerAdapter.instantiateItem(PagerAdapter.java:111)
at android.support.v4.view.ViewPager.addNewItem(ViewPager.java:1038)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1252)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1120)
at android.support.v4.view.ViewPager$3.run(ViewPager.java:277)
at android.support.v4.view.ViewPager.completeScroll(ViewPager.java:2029)
at android.support.v4.view.ViewPager.onInterceptTouchEvent(ViewPager.java:2159)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2371)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2844)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2461)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2844)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2461)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2844)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2461)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2844)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2461)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2844)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2461)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2844)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2461)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2844)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2461)
at com.android.internal.policy.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2866)
at com.android.internal.policy.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1861)
at android.app.Activity.dispatchTouchEvent(Activity.java:3061)
at android.support.v7.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:67)
at com.android.internal.policy.P
我该如何解决这个问题？请帮忙
答案 0 :(得分：8)
java.lang.OutOfMemoryError：无法分配带有16777216个空闲字节的38125292字节分配和21MB直到OOM
您正在尝试分配重量为38MB的图像。这太过分了。
要么使源图像重量较轻，要么必须downsample the image，然后加载它。
答案 1 :(得分：6)
尝试使用Glide或Picasso加载图像。
For Glide
进入项目级别build.gradle
dependencies {
compile 'com.github.bumptech.glide:glide:3.5.2'
compile 'com.android.support:support-v4:22.0.0'
}
，
Glide.with(context)
.load("imageURL")
.into(ivImg);
对于Piccaso
dependencies {
compile 'com.squareup.picasso:picasso:2.5.1'
}
，
Picasso.with(context)
.load(imageURL)
.into(ivImg);
答案 2 :(得分：0)
您可以在清单中添加此代码android:largeHeap="true"。
然后，您可以按照此步骤进行操作
或者，您可以
这应该增加所有构建/项目的内存堆。您可以按照自己的方式进行优化。
答案 3 :(得分：0)
尝试使用Glide或Picasso加载图像。
For Glide
进入项目级build.gradle
dependencies {
compile 'com.github.bumptech.glide:glide:3.5.2'
compile 'com.android.support:support-v4:22.0.0'
}
，
Glide.with(context)
.load("imageURL")
.into(ivImg);
对于Piccaso
dependencies {
compile 'com.squareup.picasso:picasso:2.5.1'
}
，
Picasso.with(context)
.load(imageURL)
.into(ivImg);