fragment

Image Crop Not Working in Fragment

由 好久不见. 提交于 2020-01-25 18:47:09
问题 Below is My Code which is working Nic when i am using Activity but when i implemet this code in fragment then after select image from gallery or capture from camera then its not showing crop option. also my image not showing in imageView. Below is my Camera Handler: public class CameraHandler { public static int IMAGE_PIC_CODE = 1000, CROP_CAMERA_REQUEST = 1001, CROP_GALLARY_REQUEST = 1002; private Intent imageCaptureintent; private boolean isActivityAvailable; Context context; private List

Fragment基础

由 删除回忆录丶 提交于 2020-01-25 14:16:19
这是Fragment的基础 基本使用 静态 动态 Fragment的生命周期 基本使用 静态 < ? xml version = "1.0" encoding = "utf-8" ? > < LinearLayout xmlns : android = "http://schemas.android.com/apk/res/android" xmlns : app = "http://schemas.android.com/apk/res-auto" xmlns : tools = "http://schemas.android.com/tools" android : layout_width = "match_parent" android : layout_height = "match_parent" tools : context = ".MainActivity" > < fragment android : layout_width = "wrap_content" android : layout_height = "wrap_content" android : name = "com.example.day03.BlankFragment" android : id = "@+id/my_blank" / > < / LinearLayout > 动态

常见 Android 代码兼容性问题及解决方案

由 十年热恋 提交于 2020-01-25 10:29:22
前言 感谢大家对这篇文章的支持，我们将深入研究安卓中常见的兼容性问题的原因以及解决方案，主要目录如下： 如何回调 Fragment 的 onActivityResult（）方法； 监听 ScrollView 滑动底部的兼容问题； WebView的兼容问题 Android 5.0 监听网络； Android 7.0 文件共享； Android 8.0 安装 Apk； Android 8.0 发送通知 RelativeLayout 常见的布局问题。 其他 我们来依次研究这些兼容性问题。 ###正文 Fragment 的 onActivityResult() 的不回调问题 首先我们写一个小例子帮助我们分析出现这个问题的原因： 创建 MainActivity，内部使用了 MainFragment，在MainFragment中点击按钮，跳转到另外一个 Activity，在 MainActivity 中也有一个按钮，点击也会跳转到另一个 Activity。 创建 SecondActivity，打开一秒后销毁，返回新的 String。 先了解一下我们的布局： 这两个跳转的区别是：分别调用了 Fragment.startActityForResult() 和 Activity.startActivityFor 来源： CSDN 作者： li504799868 链接： https://blog

collect data in PlaceholderFragment and send it to Activity

由 守給你的承諾、 提交于 2020-01-25 10:20:19
问题 I'm writing a game where every player has his own tab. Every Tab is an instance from PlaceholderFragment. I thought it would be easy to implement the dynamic count of tabs and fragments but now I don't really know how to get the input data from each instance to the ParentActivity. Maybe I should mention that I want to work with java 7 (SDK version min < 24) I'm using the interface right know, but the problem is, that the user needs to press the menu item "save data" in the Activity to save

How To Add Tabbed Activity Into Navigation Drawer Fragment in Android Studio 3.5 - the latest version

由 情到浓时终转凉″ 提交于 2020-01-25 07:24:30
问题 Please how do I add Tabbed Activity Into Navigation Drawer Fragment in Android Studio 3.5 - the latest version. I am having issues with "can not resolve method by findViewById and getSupportFragmentManager". Is there anything I need to import, am using the latest version and androidx. And if I add implements FragmentActivity or any other activities to the class, it will throw exception closing the app. public class SendMoneyFragment extends Fragment { private SendMoneyViewModel toolsViewModel

Using fragment more than one time with new values with backstack maintain

由 |▌冷眼眸甩不掉的悲伤 提交于 2020-01-24 15:47:05
问题 I am making an app using sliding menu and tab in bottom...whole app is fragment based..I am facing some problem that is I am using fragment A then click on a button and go to fragment B ,in Fragment B there is a button on clicking on this button the fragment A will update with new values..and so on means switching from A->B should be occur..but backstack should also be mantain.. Here is my code for BackStack : public static void goToFragmentWithBackStack(Fragment fragment) { Fragment tmp = fm

NullPointerException when accessing RelativeLayout from a custom view

由 别等时光非礼了梦想. 提交于 2020-01-24 12:42:07
问题 I am relatively new to Android and am completely stuck on how to access my programmatically-defined Relative Layout (defined in a fragment) in my custom View. In the fragment, this is what I have: ... @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.fragment1, container,false); RelativeLayout rl1 = new RelativeLayout(view.getContext()); TextView tView1 = new TextView(view.getContext()); tView1

转：获取网页URL地址及参数等的两种方法(js和C#)

由 孤者浪人 提交于 2020-01-24 07:27:36
转：获取网页URL地址及参数等的两种方法(js和C#) 一 js 先看一个示例 用javascript获取url网址信息 <script type="text/javascript"> document.write("location.host="+location.host+"<br>"); document.write("location.hostname="+location.hostname+"<br>"); document.write("location.href="+location.href+"<br>"); document.write("location.pathname="+location.pathname+"<br>"); document.write("location.protocol="+location.protocol+"<br>"); </script> 执行 用javascript获取url网址信息 代码效果如下 location.host= www.vnde.cn location.hostname= www.vnde.cn location.href= http://www.vnde.cn/bc/2008/0306/article_1860.html location.pathname= /bc/2008/0306/article

Fragment在Activity中的应用

由 旧巷老猫 提交于 2020-01-24 05:37:37
在本小节中介绍在Activity中创建Fragment。 官网有很详细的介绍 http://developer.android.com/guide/components/fragments.html 。介绍了Fragment的生命周期，Android3.0引入了Fragmen的概念，使UI灵活地适用于各种设备。具体原理就不多赘述了，请参考官网。 Fragment可以包含于多个Activity，可以使应用适配到不同的屏幕尺寸。当屏幕尺寸足够大时，一个Activity可以包含多个Fragment，不属于这种情况时，会启动另一个Activity包含不同的Fragment。 1 创建一个空的Activity 我们首先创建一个空的Activity，水平排列。如下所示 res/layour/main.xml： <?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="match_parent" android:orientation="horizontal" > </LinearLayout> com

Is it safe to use the ApplicationContext for a Dialog?

由 回眸只為那壹抹淺笑 提交于 2020-01-23 23:59:19
问题 I'm running an application that generates a dialog alert from within a Fragment as a network callback. This requires you to pass in an available Context reference; since I'm using Fragment s, I use getActivity() . Due to the network-dependent nature of the callback, getActivity() can sometimes return null. This crashes my code. To work around this error, I was hoping to supply the ApplicationContext to the dialog instead. It is a singleton that persists for the lifetime of the application, so
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