Android安卓开发-阿里云

安卓开发过程中的RatingBar、Handler以及GPS在大型项目中的使用【Android】

RatingBar点击评分栏后，通过Toast显示当前分数单击按钮获取当前分数并将其显示在TextView上<RatingBar android:id="@+id/rb_normal" style="@style/roomRatingBar" android:layout_width="wra...

【安卓开发】Android实现画板

普通画板添加权限<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>package Draw; import androidx.appcompa...

开源Android容器化框架Atlas开发者指南

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【安卓开发】Android实现录音并播放功能

官网文档添加权限<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.RECORD...

【安卓开发】Android中自定义软键盘的使用

自定义的键盘布局和颜色等形式，识别点击识别，正确将内容绑定在编写自定义布局文件jianpan.xml属性解释：keyHeight 软键盘一个键的高度keyWidth=“25%p” 软键盘一个键的占比horizontalGap 横向间隔verticalGap 纵向间隔codes里值得ASCII值<...

【安卓开发】Android中日期选择器DatePicker和TimePicker的使用

DatePicker和T i m e P i c k er是安卓自带的日期选择器，可以变换多种样式，下面是他们的简单使用。显示年月日和具体时间spinnersShown设置是否显示Spinner日期选择组件dialog_time.xml<?xml version="1.0" encoding=...

【安卓开发】Android studio真机测试时Logcat无输出

默认情况下是不输出的。以魅族手机为例设置->辅助功能->开发者选项->性能优化->高级日志输出参考

安卓开发学习笔记（五）：史上最简单且华丽地实现Android Stutio当中Webview控件https/http协议的方法

一.我们先在XML当中自定义一个webview(Second_layout.xml) 代码如下： 1 <?xml version="1.0" encoding="utf-8"?> 2 <LinearLayout xmlns:android="http://schemas.andro...

安卓开发学习笔记（四）：Android Stuidio无法实现隐式Intent是为什么？

一.首先检查我们的代码： FirstActivity.java(主活动程序当中的代码)：Button3监听器后面的代码就是我们隐式Intent的业务逻辑所在了，大家可以往下面看看，大概在代码的第57行。 1 package com.example.lenovo.activitytest; 2 3 i...

安卓开发学习笔记（三）：Android Stuidio无法引用Intent来创建对象，出现cannot resolve xxx

笔者在进行安卓开发时，发现自己的代码语法完全没有问题。尤其是创建intent对象的时候，语法完全是正确的，但是Android Stuidio却显示报错，Intent类显示为红色，如图所示：代码如下所示： 1 Button button2=(Button)f...

安卓开发学习笔记（二）：如何用Android Stuidio在res资源下创建xml视图文件

笔者在看了相关的教程之后发现教程当中的资源已经过时了。当我们在创建了一个新的空白的工程之后，会发现其文件夹下面的分文件夹目录和官方的教程文件结构完全不同，因此会引起很多误解。笔者使用的是最新版的Android Stuidio，其目录结构如下图所示：一.创建主活动（First活动）从...

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更新时间 2023-03-21 01:48:11

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