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在棉花糖（6.0+）設備上的onCreateViewHolder方法中誇大RecyclerView項的布局時引發“ android.view.InflateException”

[英]“android.view.InflateException” being thrown on inflating RecyclerView item's layout in onCreateViewHolder method on Marshmallow(6.0+) devices

 原文  2019-05-19 18:44:39  2   1    java/ android/ android-support-library/ android-6.0-marshmallow/ inflate-exception

問題描述

我已經使用v7：28.0.0支持庫使用RecyclerView創建了一個應用，並且在測試時該應用在Android 8.0+設備上運行良好。 但是，當使用Android 6.0 / 6.0.1設備時，應用崩潰並出現以下情況：

E/AndroidRuntime: FATAL EXCEPTION: main

android.view.InflateException: Binary XML file line #38: Binary XML file line #38: Error inflating class <unknown>

搖籃文件： 

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.example.toastinterceptor"
        minSdkVersion 23
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner 
"androidx.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'androidx.appcompat:appcompat:1.1.0-alpha05'
    implementation 'androidx.constraintlayout:constraintlayout:2.0.0-beta1'
    implementation 'com.google.android.material:material:1.1.0-alpha06'
    testImplementation 'junit:junit:4.13-beta-3'
    androidTestImplementation 'androidx.test:runner:1.2.0-beta01'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0-beta01'

//    support dependencies
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support:recyclerview-v7:28.0.0'

//    Room dependencies
    def room_version = "2.1.0-beta01"
    implementation "androidx.room:room-runtime:$room_version"
    annotationProcessor "androidx.room:room-compiler:$room_version"
    testImplementation "androidx.room:room-testing:$room_version"

//    support design dependencies
    implementation "com.android.support:design:28.0.0"
    implementation 'androidx.lifecycle:lifecycle-extensions:2.0.0'
}

activity_main： 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical">

<androidx.recyclerview.widget.RecyclerView
    android:id="@+id/rv"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:listitem="@layout/rv_list"
    android:scrollbars="vertical"
    app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
    />

<TextView
    android:id="@+id/empty_view"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center"
    android:visibility="gone"
    android:text="@string/nothing_to_show" />

rv_list： 

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:background="@drawable/border"
android:orientation="vertical"
android:padding="5dp">

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal">

    <TextView
        android:id="@+id/tv_date"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="0.8"
        android:gravity="center_vertical"
        android:hint="@string/event_time"
        android:textSize="15sp" />

    <ImageView
        android:id="@+id/iv_options"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="0.1"
        android:contentDescription="@string/options_icon"
        android:src="@drawable/ic_garbage" />
</LinearLayout>

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal">

    <ImageView
        android:id="@+id/iv_icon"
        android:layout_width="65dp"
        android:layout_height="65dp"
        android:contentDescription="@string/app_icon"
        android:src="@drawable/ic_launcher_foreground" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:divider="@drawable/divider_horizontal"
        android:orientation="vertical"
        android:showDividers="middle"
        android:padding="5dp">

        <TextView
            android:id="@+id/tv_pkgName"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="@string/package_name"
            android:paddingLeft="5dp"
            android:paddingRight="5dp"
            android:textSize="15sp" />

        <TextView
            android:id="@+id/tv_msg"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="@string/toast_content"
            android:paddingLeft="5dp"
            android:paddingRight="5dp"
            android:textSize="15sp" />
    </LinearLayout>
</LinearLayout>

樣式： 

<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
    <!-- Customize your theme here. -->
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
</style>

<style name="AppTheme.NoActionBar">
    <item name="windowActionBar">true</item>
    <item name="windowNoTitle">false</item>
</style>

<style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />

<style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />

RecyclerView.Adapter類： 

public class ToastListAdapter extends RecyclerView.Adapter<ToastListAdapter.ToastViewHolder> {

private Context context;
private LayoutInflater inflater;
private List<ToastEntity> toasts = Collections.emptyList();
private ToastRepository toastRepository;

ToastListAdapter(Application application) {
    this.context = application.getApplicationContext();
    inflater = LayoutInflater.from(context);
    toastRepository = new ToastRepository(application);
}

void setToasts(List<ToastEntity> toasts) {
    this.toasts = toasts;
    notifyDataSetChanged();
}


@NonNull
@Override
public ToastViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
    View view = inflater.inflate(R.layout.rv_list, parent, false);
    return new ToastViewHolder(view);
}
...
...
class ToastViewHolder extends RecyclerView.ViewHolder {
    private TextView tv_date, tv_pkgName, tv_msg;
    private ImageView iv_icon, iv_options;

    ToastViewHolder(@NonNull View itemView) {
        super(itemView);
        tv_date = itemView.findViewById(R.id.tv_date);
        tv_pkgName = itemView.findViewById(R.id.tv_pkgName);
        tv_msg = itemView.findViewById(R.id.tv_msg);
        iv_options = itemView.findViewById(R.id.iv_options);
        iv_icon = itemView.findViewById(R.id.iv_icon);

    }
}
}

調試： 

E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.toastinterceptor, PID: 7581
android.view.InflateException: Binary XML file line #38: Binary XML file line #38: Error inflating class <unknown>
    at android.view.LayoutInflater.inflate(LayoutInflater.java:539)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
    at com.example.toastinterceptor.ToastListAdapter.onCreateViewHolder(ToastListAdapter.java:46)
    at com.example.toastinterceptor.ToastListAdapter.onCreateViewHolder(ToastListAdapter.java:24)
    at androidx.recyclerview.widget.RecyclerView$Adapter.createViewHolder(RecyclerView.java:6949)
    at androidx.recyclerview.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:6118)
    at androidx.recyclerview.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:6001)
    at androidx.recyclerview.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5997)
    at androidx.recyclerview.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2227)
    at androidx.recyclerview.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1558)
    at androidx.recyclerview.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1518)
    at androidx.recyclerview.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:613)
    at androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:4032)
    at androidx.recyclerview.widget.RecyclerView.dispatchLayout(RecyclerView.java:3749)
    at androidx.recyclerview.widget.RecyclerView.onLayout(RecyclerView.java:4302)
    at android.view.View.layout(View.java:17211)
    at android.view.ViewGroup.layout(ViewGroup.java:5584)
    at android.widget.LinearLayout.setChildFrame(LinearLayout.java:2001)
    at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1844)
    at android.widget.LinearLayout.onLayout(LinearLayout.java:1753)
    at android.view.View.layout(View.java:17211)
    at android.view.ViewGroup.layout(ViewGroup.java:5584)
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:396)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:333)
    at android.view.View.layout(View.java:17211)
    at android.view.ViewGroup.layout(ViewGroup.java:5584)
    at android.widget.LinearLayout.setChildFrame(LinearLayout.java:2001)
    at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1844)
    at android.widget.LinearLayout.onLayout(LinearLayout.java:1753)
    at android.view.View.layout(View.java:17211)
    at android.view.ViewGroup.layout(ViewGroup.java:5584)
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:396)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:333)
    at android.view.View.layout(View.java:17211)
    at android.view.ViewGroup.layout(ViewGroup.java:5584)
    at android.widget.LinearLayout.setChildFrame(LinearLayout.java:2001)
    at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1844)
    at android.widget.LinearLayout.onLayout(LinearLayout.java:1753)
    at android.view.View.layout(View.java:17211)
    at android.view.ViewGroup.layout(ViewGroup.java:5584)
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:396)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:333)
    at com.android.internal.policy.PhoneWindow$DecorView.onLayout(PhoneWindow.java:2763)
    at android.view.View.layout(View.java:17211)
    at android.view.ViewGroup.layout(ViewGroup.java:5584)
    at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2640)
    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2285)
    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1343)
    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6826)
    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:901)
    at android.view.Choreographer.doCallbacks(Choreographer.java:703)
    at android.view.Choreographer.doFrame(Choreographer.java:638)
    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:887)
    at android.os.Handler.handleCallback(Handler.java:815)
    at android.os.Handler.dispatchMessage(Handler.java:104)
    at android.os.Loope
Application terminated.

如何使該應用程序在6.0以上的Android版本上運行？ 支持庫是否適用於從6.0開始的Android版本？ 我可以使用多個版本的支持庫，還是必須完全刪除RecyclerView之類的組件才能獲得較低的Android版本。 請協助。

1 個解決方案

解決方案1
 2 已采納  2019-05-19 19:38:36

錯誤rv_list第38 rv_list 。 那是： 

android:src="@drawable/ic_launcher_foreground"

在典型的Android Studio項目中， ic_launcher_foreground是在res/drawable-v24/ ic_launcher_foreground res/drawable-v24/定義的。 這表示“僅在API級別24和更高的設備上使用此資源”。 因此，除非您已完成創建可在較舊設備上運行的該資源的另一個版本的操作，否則您將無法在Android 6.0（API級別23）及以下版本上擴展布局。

您需要android:src屬性指向所有版本的Android上都具有的可繪制資源。 或者，如果您打算在運行時填充ImageView ，請從布局中刪除android:src 。

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