java - Android：加载 xml 布局时出现 OutOfMemoryError。我该如何避免它是什么意思？

Question

可能重复：
Android：错误膨胀 xml：类未知

我的应用程序在扩展此布局时崩溃：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" xmlns:android="http://schemas.android.com/apk/res/android">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1" >

        <RelativeLayout
            android:layout_width="fill_parent"
            android:layout_height="match_parent" >

            <Button
                android:id="@+id/btnSurvey"
                android:layout_width="80dip"
                android:layout_height="80dip"
                android:layout_centerInParent="true"
                android:background="@drawable/myschedulechanges_icon"
                android:onClick="openSurvey" />

            <TextView
                android:id="@+id/textView1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_below="@+id/btnSurvey"
                android:layout_centerHorizontal="true"
                android:layout_marginTop="3dip"
                android:text="Mijn\nroosterwijzigingen" />

        </RelativeLayout>

    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1" >

        <RelativeLayout
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_weight="1" >

            <Button
                android:id="@+id/btnAutomaticCheck"
                android:layout_width="80dip"
                android:layout_height="80dip"
                android:layout_centerInParent="true"
                android:background="@drawable/automaticcheck_icon"
                android:onClick="openAutomaticCheck" />

            <TextView
                android:id="@+id/textView2"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_below="@+id/btnAutomaticCheck"
                android:layout_centerHorizontal="true"
                android:layout_marginTop="3dip"
                android:text="Automatisch\nchecken" />

        </RelativeLayout>

        <RelativeLayout
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_weight="1" >

            <Button
                android:id="@+id/btnManualCheck"
                android:layout_width="80dip"
                android:layout_height="80dip"
                android:layout_centerInParent="true"
                android:background="@drawable/manualcheck_icon"
                android:onClick="openManualCheck" />

            <TextView
                android:id="@+id/textView3"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_below="@+id/btnManualCheck"
                android:layout_centerHorizontal="true"
                android:layout_marginTop="3dip"
                android:text="Handmatig\nchecken" />

        </RelativeLayout>

    </LinearLayout>

</LinearLayout>

使用这些错误消息：

11-18 09:48:15.713: E/AndroidRuntime(642): FATAL EXCEPTION: main
    11-18 09:48:15.713: E/AndroidRuntime(642): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.camelotapps.augustinianum/com.camelotapps.augustinianum.ScheduleChangesActivity}: android.view.InflateException: Binary XML file line #46: Error inflating class <unknown>
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.app.ActivityThread.access$600(ActivityThread.java:123)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.os.Handler.dispatchMessage(Handler.java:99)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.os.Looper.loop(Looper.java:137)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.app.ActivityThread.main(ActivityThread.java:4424)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at java.lang.reflect.Method.invokeNative(Native Method)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at java.lang.reflect.Method.invoke(Method.java:511)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at dalvik.system.NativeStart.main(Native Method)
    11-18 09:48:15.713: E/AndroidRuntime(642): Caused by: android.view.InflateException: Binary XML file line #46: Error inflating class <unknown>
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.view.LayoutInflater.createView(LayoutInflater.java:606)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.view.LayoutInflater.onCreateView(LayoutInflater.java:653)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:678)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.view.LayoutInflater.rInflate(LayoutInflater.java:739)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.view.LayoutInflater.rInflate(LayoutInflater.java:742)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.view.LayoutInflater.rInflate(LayoutInflater.java:742)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:251)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.app.Activity.setContentView(Activity.java:1835)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at com.camelotapps.augustinianum.ScheduleChangesActivity.onCreate(ScheduleChangesActivity.java:18)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.app.Activity.performCreate(Activity.java:4465)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
    11-18 09:48:15.713: E/AndroidRuntime(642):  ... 11 more
    11-18 09:48:15.713: E/AndroidRuntime(642): Caused by: java.lang.reflect.InvocationTargetException
    11-18 09:48:15.713: E/AndroidRuntime(642):  at java.lang.reflect.Constructor.constructNative(Native Method)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at java.lang.reflect.Constructor.newInstance(Constructor.java:417)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.view.LayoutInflater.createView(LayoutInflater.java:586)
    11-18 09:48:15.713: E/AndroidRuntime(642):  ... 26 more
    11-18 09:48:15.713: E/AndroidRuntime(642): Caused by: java.lang.OutOfMemoryError
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.graphics.Bitmap.nativeCreate(Native Method)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.graphics.Bitmap.createBitmap(Bitmap.java:605)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.graphics.Bitmap.createBitmap(Bitmap.java:551)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.graphics.Bitmap.createScaledBitmap(Bitmap.java:437)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.graphics.BitmapFactory.finishDecode(BitmapFactory.java:524)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:499)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:351)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:773)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.content.res.Resources.loadDrawable(Resources.java:1935)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.content.res.TypedArray.getDrawable(TypedArray.java:601)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.view.View.<init>(View.java:2785)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.widget.TextView.<init>(TextView.java:449)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.widget.Button.<init>(Button.java:108)
    11-18 09:48:15.713: E/AndroidRuntime(642):  at android.widget.Button.<init>(Button.java:104)
    11-18 09:48:15.713: E/AndroidRuntime(642):  ... 29 more

第 46 行是本节的第一行：

<Button
    android:id="@+id/btnAutomaticCheck"
    android:layout_width="80dip"
    android:layout_height="80dip"
    android:layout_centerInParent="true"
    android:background="@drawable/automaticcheck_icon"
    android:onClick="openAutomaticCheck" />

为什么我会收到 OutOfMemoryError？而且，更重要的是，我能做些什么来避免它？

提前谢谢了！

Answer 1

似乎主要原因是 OutOfMemory 加载 Bitmap 时，您可能加载了太多 Bitmaps 吗？如果是的话，你可以考虑实现一个 LRUCache ......让我更新......

Answer 2

我只是稍微减小了按钮背景的大小。它现在工作正常！