小编q12*_*26y的帖子

绘制/ information.xml

<vector xmlns:android="http://schemas.android.com/apk/res/android"
        android:width="24dp"
        android:height="24dp"
        android:viewportWidth="24.0"
        android:viewportHeight="24.0">
    <path
        android:fillColor="#FF000000"
        android:pathData="M13,9H11V7H13M13,17H11V11H13M12,2A10,10 0,0 0,2 12A10,10 0,0 0,12 22A10,10 0,0 0,22 12A10,10 0,0 0,12 2Z"/>
</vector>

LayoutofCardView.xml

<ImageView
    android:layout_width="24dp"
    android:background="#f00"
    android:layout_height="24dp"
    android:id="@+id/informationImageView"
    app:srcCompat="@drawable/information"
    tools:src="@drawable/information"
    />

的build.gradle

apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.2"

    defaultConfig {
        applicationId "com.company"
        minSdkVersion 15
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
        generatedDensities = []

    }
    aaptOptions {
        additionalParameters "--no-version-vectors"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    packagingOptions {
        exclude 'META-INF/NOTICE.txt'
        exclude …

public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState)

如果我们打电话说

fragment.getContext()并且container.getContext将我们得到相同的结果,则主机活动？

也view.getContext()总是返回Activity context或者它可以返回其他类型的context？

我正进入(状态,

Caused by java.lang.InternalError: java.util.MissingResourceException: Can't find bundle for base name sun.util.logging.resources.logging, locale en_US 

在我的应用程序中来自firebase崩溃报告.

其他详情

Manufacturer: HTC
Model: HTC 10 
Android API: 24 

这是堆栈跟踪

java.util.logging.Logger$1.run (Logger.java:1385)
java.util.logging.Logger$1.run (Logger.java:1379)
java.security.AccessController.doPrivileged (AccessController.java:41)
java.util.logging.Logger.findSystemResourceBundle (Logger.java:1378)
java.util.logging.Logger.findResourceBundle (Logger.java:1425)
java.util.logging.Logger.setupResourceInfo (Logger.java:1523)
java.util.logging.Logger.<init> (Logger.java:266)
java.util.logging.Logger.<init> (Logger.java:261)
java.util.logging.LogManager$SystemLoggerContext.demandLogger (LogManager.java:734)
java.util.logging.LogManager.demandSystemLogger (LogManager.java:399)
java.util.logging.Logger.getPlatformLogger (Logger.java:474)
java.util.logging.LoggingProxyImpl.getLogger (LoggingProxyImpl.java:41)
sun.util.logging.LoggingSupport.getLogger (LoggingSupport.java:100)
sun.util.logging.PlatformLogger$JavaLoggerProxy.<init> (PlatformLogger.java:636)
sun.util.logging.PlatformLogger$JavaLoggerProxy.<init> (PlatformLogger.java:631)
sun.util.logging.PlatformLogger.<init> (PlatformLogger.java:246)
sun.util.logging.PlatformLogger.getLogger (PlatformLogger.java:205)
java.net.CookieManager.put (CookieManager.java:262)
okhttp3.JavaNetCookieJar.saveFromResponse (JavaNetCookieJar.java:47)
okhttp3.internal.http.HttpHeaders.receiveHeaders (HttpHeaders.java:182)
okhttp3.internal.http.BridgeInterceptor.intercept (BridgeInterceptor.java:95)
okhttp3.internal.http.RealInterceptorChain.proceed (RealInterceptorChain.java:92)
okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept (RetryAndFollowUpInterceptor.java:120)
okhttp3.internal.http.RealInterceptorChain.proceed (RealInterceptorChain.java:92)
okhttp3.internal.http.RealInterceptorChain.proceed (RealInterceptorChain.java:67)
okhttp3.RealCall.getResponseWithInterceptorChain (RealCall.java:185)
okhttp3.RealCall.execute (RealCall.java:69)

这是相关的Logger代码 …

我在维基百科上找到了它:

T的结构范围(可用于定位友方函数)

有人可以解释一下它是什么吗？谷歌没有多大帮助.

有一个相关的问题，如何在 Android Studio 中增加字体大小？.

但它不会增加快速文档的字体大小。

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recyclerView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#ddd"
        android:fadeScrollbars="true"
        android:scrollbarSize="12dp"
        android:orientation="vertical"
        android:scrollbars="vertical"/>

我正在测试5.1.1上的代码.改变android:scrollbarSize没有效果.我尝试增加和减少它,没有变化.

如何改变宽度？

class ClassSealer {
private:
   friend class Sealed;
   ClassSealer() {}
};
class Sealed : public ClassSealer
{ 
   // ...
};
class FailsToDerive : public Sealed
{
   // This class is capable of being instantiated
};

以上未能封上课,但以下作品,为什么？

class ClassSealer {
private:
   friend class Sealed;
   ClassSealer() {}
};
class Sealed : public virtual ClassSealer
{ 
   // ...
};
class FailsToDerive : public Sealed
{
   // Cannot be instantiated
};

这里发生了什么？虚拟继承在这里发挥了什么作用？

来自：http : //developer.android.com/guide/topics/manifest/activity-element.html

android:relinquishTaskIdentity

Run Code Online (Sandbox Code Playgroud)

活动是否将其任务标识符放弃给任务堆栈中位于其上方的活动。根活动将此属性设置为“true”的任务将用任务中的下一个活动的基本意图替换基本意图。

这里的基本意图是什么？

#include <iostream>
using namespace std;
class myclass
{

public:
    void fun()
    {
        cout<<"Having some fun"<<endl;
    }
};


class spointer
{
    myclass * mptr;
public:
    spointer(myclass * m)
    {
        mptr=m; 
    }

    myclass * operator->()
    {
        return mptr;
    }

};


int main() {
    // your code goes here

    spointer s(new myclass);

    s->fun();
    return 0;
}

当s->fun()调用时main,s->会返回指针myclass,但是如何在指针指向的对象fun()上调用myclass？

编辑:因为spointer::operator->返回指针myclass,为什么可以说s->fun(),而不是说s->->fun()或什么

#include <iostream>
using namespace std;

struct number
{
    int value;
    int pos;
public:
    number(int a,int b)
    {
        value=a;
        pos=b;
    }
};
int main() {
    // your code goes here
    number(1,2);
    return 0;
}

在这种情况下,在哪里分配内存number(1,2)？在堆或堆栈上？我们如何验证它？