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C++中智能指针的设计和使用 - C/C++ - 清泛网 - 专注C/C++及内核技术
...数
{
delete _ptr;
}
};
实现引用计数有两种经典策略，在这里将使用其中一种，这里所用的方法中，需要定义一个单独的具体类用以封装引用计数和相关指针：
// 定义仅由HasPtr类使用的U_Ptr类，用于封装使用计数和相关指针...
How to render a PDF file in Android
...android:background="#ffffff"
xmlns:android="http://schemas.android.com/apk/res/android" >
<TextView
android:layout_width="match_parent"
android:layout_height="40dp"
android:background="@color/colorPrimaryDark"
android:text="View PDF"
android:tex...
using facebook sdk in Android studio
...in.xml file :
<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"
android:orientation="vertical"
tools:context="com.demonuts.fblogin.M...
How do I parse JSON with Objective-C?
...nBundle] pathForResource:@"index" ofType:@"json"];
//将文件内容读取到字符串中，注意编码NSUTF8StringEncoding 防止乱码，
NSString* jsonString = [[NSString alloc] initWithContentsOfFile:path encoding:NSUTF8StringEncoding error:nil];
//将字符串写到缓冲区。
NSData* jsonD...
Android studio, gradle and NDK
...cts. It'll look something like this. This gradle.build creates a different apk for each architecture. You must select which architecture you want using the build variants pane.
apply plugin: 'android'
dependencies {
compile project(':lib')
}
android {
compileSdkVersion 19
buildToolsVe...
What does FrameLayout do?
....
For example:
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ImageView
android:id="@+id/backgroundImage"
android:layout_widt...
Android How to adjust layout in Full Screen Mode when softkeyboard is visible
...mWindowsExceptTopFrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<!-- Your original layout here -->
</com.example.yourapplication.FitsSystemWindowsExceptTopFrameLayout>
...
Android - shadow on text?
...
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:padding="20dp" >
<TextView
android:id="@+id/textview"
a...
Push Notifications in Android Platform
... else
{
Log.d(TAG, "No valid Google Play Services APK found.");
}
}
}
@Override protected void onResume()
{
super.onResume(); checkPlayServices();
}
# Implement GCM Required methods (Add below methods in LaunchActivity)
private boolean che...
What does android:layout_weight mean?
...ng="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">
<TextView
android:layout_width="wrap_content"
android:layout_hei...