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compileSdkVersion 29我用and建立了一个项目buildToolsVersion "29.0.0"。当我设置minSdkVersion 21并尝试使用 Nexus S（API 21）和 Nexus 5X（API 26）运行项目时。它根本不起作用。只有当我使用最新的 API(29) 运行项目时，它才能工作。你能教我如何minSdkVersion正确使用吗？

built.gradle（模块：应用程序）

    android {
    compileSdkVersion 29
    buildToolsVersion "29.0.0"

    defaultConfig {
        applicationId ""
        minSdkVersion 21
        targetSdkVersion 29
        versionCode 9
        versionName "1.0.1"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }

    compileOptions {
        sourceCompatibility java_version
        targetCompatibility java_version
    }
    }


    dependencies {
    implementation 'com.google.firebase:firebase-core:17.0.1'
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation 'androidx.appcompat:appcompat:1.1.0-rc01'
    implementation 'androidx.core:core-ktx:1.2.0-alpha02'
    implementation 'androidx.constraintlayout:constraintlayout:2.0.0-beta1'
    testImplementation 'junit:junit:4.13-beta-3'
    androidTestImplementation 'androidx.test:runner:1.3.0-alpha02'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0-alpha02'}

    apply plugin: 'com.google.gms.google-services'

built.gradle(项目)

    buildscript {
    ext.kotlin_version = '1.3.41'
    ext.java_version = JavaVersion.VERSION_1_8
    repositories {
        google()
        jcenter()

    }
    dependencies {
        classpath 'com.google.gms:google-services:4.2.0'
        classpath 'com.android.tools.build:gradle:3.4.2'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
    }

    allprojects {
    repositories {
        google()
        jcenter()

    }
    }

task clean(type: Delete) {
    delete rootProject.buildDir
}

我得到的错误

 java.lang.OutOfMemoryError: Failed to allocate a 216000012 byte allocation with 1940394 free bytes and 125MB until OOM
    at dalvik.system.VMRuntime.newNonMovableArray(Native Method)
    at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method)
    at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:609)
    at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:444)
    at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:973)
    at android.content.res.Resources.loadDrawableForCookie(Resources.java:2423)
    at android.content.res.Resources.loadDrawable(Resources.java:2330)
    at android.content.res.Resources.getDrawable(Resources.java:758)
    at android.content.Context.getDrawable(Context.java:402)
    at androidx.core.content.ContextCompat.getDrawable(ContextCompat.java:454)
    at androidx.appcompat.widget.ResourceManagerInternal.getDrawable(ResourceManagerInternal.java:144)
    at androidx.appcompat.widget.ResourceManagerInternal.getDrawable(ResourceManagerInternal.java:132)
    at androidx.appcompat.content.res.AppCompatResources.getDrawable(AppCompatResources.java:104)
    at androidx.appcompat.widget.AppCompatImageHelper.loadFromAttributes(AppCompatImageHelper.java:59)
    at androidx.appcompat.widget.AppCompatImageView.<init>(AppCompatImageView.java:78)
    at androidx.appcompat.widget.AppCompatImageView.<init>(AppCompatImageView.java:68)
    at androidx.appcompat.app.AppCompatViewInflater.createImageView(AppCompatViewInflater.java:187)
    at androidx.appcompat.app.AppCompatViewInflater.createView(AppCompatViewInflater.java:107)
    at androidx.appcompat.app.AppCompatDelegateImpl.createView(AppCompatDelegateImpl.java:1397)
    at androidx.appcompat.app.AppCompatDelegateImpl.onCreateView(AppCompatDelegateImpl.java:1447)
    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:725)
    at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
    at androidx.appcompat.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:545)
    at androidx.appcompat.app.AppCompatActivity.setContentView(AppCompatActivity.java:161)
    at com.example.a36questions.MainActivity.onCreate(MainActivity.kt:15)
    at android.app.Activity.performCreate(Activity.java:5937)
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2251)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
    at android.app.ActivityThread.access$800(ActivityThread.java:144)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
    at android.os.Handler.dispatchMessage(Handler.java:102)
    at android.os.Looper.loop(Looper.java:135)
    at android.app.ActivityThread.main(ActivityThread.java:5221)
    at java.lang.reflect.Method.invoke(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:372)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)

在我将 Hardik Bmbhania 的建议应用于清单文件后，该项目开始使用 Nexus 5（API 26）。但是设备（API 21）仍然发生相同的错误。错误的详细信息如下。

    java.lang.OutOfMemoryError: Failed to allocate a 216000012 byte allocation with 1940586 free bytes and 125MB until OOM
        at dalvik.system.VMRuntime.newNonMovableArray(Native Method)
        at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method)
        at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:609)
        at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:444)
        at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:973)
        at android.content.res.Resources.loadDrawableForCookie(Resources.java:2423)
        at android.content.res.Resources.loadDrawable(Resources.java:2330)
        at android.content.res.Resources.getDrawable(Resources.java:758)
        at android.content.Context.getDrawable(Context.java:402)
        at androidx.core.content.ContextCompat.getDrawable(ContextCompat.java:454)
        at androidx.appcompat.widget.ResourceManagerInternal.getDrawable(ResourceManagerInternal.java:144)
        at androidx.appcompat.widget.ResourceManagerInternal.getDrawable(ResourceManagerInternal.java:132)
        at androidx.appcompat.content.res.AppCompatResources.getDrawable(AppCompatResources.java:104)
        at androidx.appcompat.widget.AppCompatImageHelper.loadFromAttributes(AppCompatImageHelper.java:59)
        at androidx.appcompat.widget.AppCompatImageView.<init>(AppCompatImageView.java:78)
        at androidx.appcompat.widget.AppCompatImageView.<init>(AppCompatImageView.java:68)
        at androidx.appcompat.app.AppCompatViewInflater.createImageView(AppCompatViewInflater.java:187)
        at androidx.appcompat.app.AppCompatViewInflater.createView(AppCompatViewInflater.java:107)
        at androidx.appcompat.app.AppCompatDelegateImpl.createView(AppCompatDelegateImpl.java:1397)
        at androidx.appcompat.app.AppCompatDelegateImpl.onCreateView(AppCompatDelegateImpl.java:1447)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:725)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
        at androidx.appcompat.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:545)
        at androidx.appcompat.app.AppCompatActivity.setContentView(AppCompatActivity.java:161)
        at com.example.a36questions.MainActivity.onCreate(MainActivity.kt:15)
        at android.app.Activity.performCreate(Activity.java:5937)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2251)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
        at android.app.ActivityThread.access$800(ActivityThread.java:144)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:135)
        at android.app.ActivityThread.main(ActivityThread.java:5221)
        at java.lang.reflect.Method.invoke(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:372)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
4

2 回答 2

1

OutOfMemoryError是 android 在处理位图时最常见的问题。当由于内存空间不足而无法分配对象并且垃圾收集器无法释放一些空间时，Java 虚拟机 (JVM) 会引发此错误。

您可以在清单文件中添加以下实体android:hardwareAccelerated="false"，android:largeHeap="true"它适用于某些环境。

<application
    android:allowBackup="true"
    android:hardwareAccelerated="false"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:largeHeap="true"
    android:supportsRtl="true"
    android:theme="@style/AppTheme">

让我知道如果不工作

于 2019-07-26T08:59:04.653 回答
0

我找到了另一个原因。就我而言，我不小心使用了超大图像（超过 2048 x 2048 的图像）。当我将其调整为较小的图像时。错误消失了。

于 2019-07-27T06:11:57.843 回答