Android学习1:Android开发环境搭建

安装文件:

http://www.android-studio.org/

android studio 2.0:https://dl.google.com/dl/android/studio/install/2.0.0.20/android-studio-bundle-143.2739321-windows.exe

安装路径:

studio: D:\Program Files\Android\Android Studio2

sdk: D:\Users\Thinkpad\AppData\Local\Android\sdk

新建Project forder: D:\Android\hello,新建一个Empty Activity

手机设置:

1.打开开发者模式

2. 设置usb调试

运行App:

点击android studio里的运行按钮, 选择连接的手机, 程序在手机启动成功.

启动的时候,手机会提示安装apk程序.

生成的MainActivity:

package com.example.lijingshou.myapplication4;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;public class MainActivity extends AppCompatActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);    }}

此外layout文件夹下,有个Activity对应的xml布局文件:

<?xml version="1.0" encoding="utf-8"?><RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context="com.example.lijingshou.myapplication4.MainActivity">    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="Hello World!" /></RelativeLayout>

AndroidManifest.xml:

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.example.lijingshou.myapplication4">    <application        android:allowBackup="true"        android:icon="@mipmap/ic_launcher"        android:label="@string/app_name"        android:supportsRtl="true"        android:theme="@style/AppTheme">        <activity android:name=".MainActivity">            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>    </application></manifest>

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