Android Studio 3.0 Build #AI-171.4408382, built on October 21, 2017 JRE: 1.8.0_152-release-915-b08 x86_64 JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o Mac OS X 10.12.

1

2

3

4

创建新工程

把 gradle-wrapper.properties (Gradle Version) 第7行https改为http:

#Fri Nov 10 14:04:14 CST 2017
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
# https -> http
distributionUrl=http\://services.gradle.org/distributions/gradle-4.1-all.zip

activity_main.xml

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/welcomeLinearLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    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.iosdevlog.welcome.MainActivity">

    <TextView
        android:id="@+id/welcomeTextView"
        android:layout_width="wrap_content"
        android:layout_height="0dp"
        android:layout_gravity="center_horizontal"
        android:layout_weight="1"
        android:gravity="center"
        android:text="@string/welcomTextView"
        android:textColor="@color/welcome_text_color"
        android:textSize="@dimen/welcome_textsize" />

    <ImageView
        android:id="@+id/bugImageView"
        android:layout_width="wrap_content"
        android:layout_height="0dp"
        android:layout_weight="1"
        android:contentDescription="@string/iosdevlog_logo"
        android:src="@drawable/bug" />

</LinearLayout>
  • 1 改为 LineLayout
  • 7 垂直布局
  • 15 添加 id
  • 18 TextView水平居中
  • 17,19,28,29 各占 50%
  • 20 多行居中
  • 21 文字内容
  • 22 文字颜色
  • 23 文字大小
  • 30 辅助功能 TalkBack

国际化

strings.xml 右上角 Open Editor

点击地球仪,选择Chinese

Chinese输入翻译的语言。