fragment

Android Preference 保存应用设置

余生长醉 提交于 2019-12-28 03:37:53
Preference 保存应用设置 个性化是Android的一大特点,根据用户习惯不同app应提供修改设置的页面。因此app需要面对大量需要持久化的变量。引入 Preference 库来实现这一需求 导入 原有的Preference包已被弃用,建议使用AndroidX下的Preference 在 app.build.gradle 中添加以下依赖 dependencies { // ... implementation 'androidx.preference:preference:1.1.0' } 编写配置界面 定义界面 首先在res新建 xml 资源文件,在里面新建一个以 <PreferenceScreen> 开头的xml文件 <!-- preferences.xml --> <?xml version="1.0" encoding="utf-8"?> < PreferenceScreen xmlns: app = " http://schemas.android.com/apk/res-auto " > < SwitchPreferenceCompat app: key = " notifications " app: icon = " @drawable/ic_android_black_24dp " app: title = " 开关 " /> < Preference

Fragment-Fragment communication in Android

拥有回忆 提交于 2019-12-27 17:40:06
问题 I am at beginner level in Android programming, so I need your sincere help for this. Anyone help me please. I am trying to build a SLIDING UI using fragments so my actual doubt is ... I have a Fragment (say Fragment A) it has a TextView and Button in it and another Fragment (say Fragment B). It has a TextView in it. I need to show the Fragment A 's TextView 's content in Fragment B's TextView , when I pressed the Button in FRAGMENT A. I tried many ways, unfortunately I didn't got the proper

Android Fragment —Tab 导航栏的实现

天大地大妈咪最大 提交于 2019-12-27 13:24:31
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 微信、QQ、微博底部等都有 Tab 标签选项,点击不同的标签可以切换的不同的界面。 步骤 1)描述主界面布局 activity_main.xml 代码如下: <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <LinearLayout android:layout_width="match_parent" android:layout_height="60dp" android:background="@drawable/header_bg" > <RelativeLayout android:id="@+id/left_layout" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1" > <LinearLayout android:layout_width="match

第01组 Alpha冲刺(5/6)

白昼怎懂夜的黑 提交于 2019-12-27 00:27:10
队名:007 组长博客: https://www.cnblogs.com/Linrrui/p/11901035.html 作业博客: https://edu.cnblogs.com/campus/fzu/SE_FZU_1917_K/homework/9942 组员情况 林睿(组长) 过去两天完成了哪些任务 组织第五次会议 验收alpha(4/6)的成果 整理本次博客 github签入记录 接下来的计划 继续跟进alpha(5/6)的进度 准备alpha答辩 还剩下哪些任务 燃尽图 遇到了哪些困难 中间由于准备考试而拉下一些进度需要赶一赶 有哪些收获和疑问 提高了团队管理的效率 张庆焰 过去两天完成了哪些任务 完成了社区帖子发布页的图片上传功能 github签入记录 组内共享 接下来的计划 完成多图上传 还剩下哪些任务 燃尽图 组内共享 遇到了哪些困难 不知如何上传图片给服务器。解决:使用@Multipart注解 + MultipartBody.Part + RequestBody的方式上传 有哪些收获和疑问 学会了图片上传 姚彬锟 过去两天完成了哪些任务 完成了我的借出页面 github签入记录 组内共享 接下来的计划 完成我的借入页面 还剩下哪些任务 燃尽图 组内共享 遇到了哪些困难 无法直接给Fragment传递参数。解决:在Fragment中创建一个工厂方法

Fragments addToBackStack Closing the application

被刻印的时光 ゝ 提交于 2019-12-26 13:30:12
问题 I am calling some fragments from HomeScreen.java. Now whenever i press back button in any fragment, its closes the application. But i want previous fragment which was loaded.Following is HomeScreen.java code. public class HomeScreen extends AppCompatActivity implements JobListFragment.OnJobSelectedListener { Timer timer; TimerTask timerTask; final android.os.Handler handler = new android.os.Handler(); FragmentTransaction transaction; android.app.FragmentManager fragmentManager;

Fragments addToBackStack Closing the application

强颜欢笑 提交于 2019-12-26 13:29:32
问题 I am calling some fragments from HomeScreen.java. Now whenever i press back button in any fragment, its closes the application. But i want previous fragment which was loaded.Following is HomeScreen.java code. public class HomeScreen extends AppCompatActivity implements JobListFragment.OnJobSelectedListener { Timer timer; TimerTask timerTask; final android.os.Handler handler = new android.os.Handler(); FragmentTransaction transaction; android.app.FragmentManager fragmentManager;

How can we call one fragment from another class that doesn't contain that fragment?

邮差的信 提交于 2019-12-26 04:58:19
问题 I am having one activity class : IdeaBoxActivity Here is the layout code of the activity- <?xml version="1.0" encoding="utf-8"?> <android.support.design.widget.CoordinatorLayout 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="com.asif047"> <android.support.v4.widget.DrawerLayout android:layout

How can we call one fragment from another class that doesn't contain that fragment?

删除回忆录丶 提交于 2019-12-26 04:57:26
问题 I am having one activity class : IdeaBoxActivity Here is the layout code of the activity- <?xml version="1.0" encoding="utf-8"?> <android.support.design.widget.CoordinatorLayout 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="com.asif047"> <android.support.v4.widget.DrawerLayout android:layout

How can we call one fragment from another class that doesn't contain that fragment?

拟墨画扇 提交于 2019-12-26 04:57:17
问题 I am having one activity class : IdeaBoxActivity Here is the layout code of the activity- <?xml version="1.0" encoding="utf-8"?> <android.support.design.widget.CoordinatorLayout 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="com.asif047"> <android.support.v4.widget.DrawerLayout android:layout

How to Hide the row item of Recycleview from fragment

跟風遠走 提交于 2019-12-25 18:26:55
问题 I have a fragment class which uses Recycleview to show list of Text and Image. How can I access Recycleview row items and set an custom text to any Textview or Hide the Desired Textview from fragment class. This is my layout <?xml version="1.0" encoding="utf-8"?> <FrameLayout 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