安卓常用布局文件小结/备忘

基本线性布局：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">
 
    <Button
        android:id="@+id/button_1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="活动2按钮1" />
 
    <Button
        android:id="@+id/button_2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="活动2按钮2-回到活动1" />
</LinearLayout>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical">

<Button

android:id="@+id/button_1"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="活动2按钮1" />

<Button

android:id="@+id/button_2"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="活动2按钮2-回到活动1" />

</LinearLayout>

constraintlayout布局：

<androidx.constraintlayout.widget.ConstraintLayout 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">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World!"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

<androidx.constraintlayout.widget.ConstraintLayout 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">

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Hello World!"

app:layout_constraintBottom_toBottomOf="parent"

app:layout_constraintLeft_toLeftOf="parent"

app:layout_constraintRight_toRightOf="parent"

app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

一个多层嵌套布局：

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:padding="30dp">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical">

            <!--TextView中的文字默认是左对齐的。android:gravity 指定对其方式。-->
            <TextView
                android:id="@+id/text_view"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:gravity="center"
                android:text="请开始你的表演"
                android:textColor="#2828FF"
                android:textSize="22sp" />

            <!-- textAllCaps=false禁止对button上的文字进行大写转换 -->
            <Button
                android:id="@+id/button_1"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="提交"
                android:textAllCaps="false" />

            <!-- EditText可以输入文字。 maxLines指定输入最多几行,超过这个值文本就会上下滚动。-->
            <EditText
                android:id="@+id/edit_text"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:hint="请输入手机号"
                android:maxLines="2" />

            <!-- 设置一张图片,因为图片长宽未知所以设置其width和height都是wrap_content,这样不管图片尺寸多少都可以完整展示出来 -->
            <!-- 图片名字好像是不能用中文,不能有大写字母 -->
            <ImageView
                android:id="@+id/image_view1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/girl_1" />

            <ImageView
                android:id="@+id/image_view2"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/coffee1" />

            <!-- style是滚动条样式。android:max是给滚动条设置一个最大值 -->
            <ProgressBar
                android:id="@+id/progress_bar"
                style="?android:attr/progressBarStyleHorizontal"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:max="100" />

        </LinearLayout>
    </ScrollView>

</FrameLayout>

<?xml version="1.0" encoding="utf-8"?>

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent">

<ScrollView

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:padding="30dp">

<LinearLayout

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical">

<TextView

android:id="@+id/text_view"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:gravity="center"

android:text="请开始你的表演"

android:textColor="#2828FF"

android:textSize="22sp" />

<Button

android:id="@+id/button_1"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="提交"

android:textAllCaps="false" />

<EditText

android:id="@+id/edit_text"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:hint="请输入手机号"

android:maxLines="2" />

<ImageView

android:id="@+id/image_view1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:src="@drawable/girl_1" />

<ImageView

android:id="@+id/image_view2"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:src="@drawable/coffee1" />

<ProgressBar

android:id="@+id/progress_bar"

style="?android:attr/progressBarStyleHorizontal"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:max="100" />

</LinearLayout>

</ScrollView>

</FrameLayout>

配置文件：

apply plugin: 'com.android.application'

android {
    compileSdkVersion 24
    buildToolsVersion "29.0.2"
    defaultConfig {
        applicationId "com.example.bins.uiWidgetTest"
        minSdkVersion 23
        targetSdkVersion 24
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {

    compile fileTree(dir: 'libs', include: ['*.jar'])
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile 'com.android.support:appcompat-v7:24.2.1'
    compile 'com.android.support:percent:24.2.1'
    compile 'com.android.support:recyclerview-v7:24.2.1'
    testCompile 'junit:junit:4.12'
}

apply plugin: 'com.android.application'

android {

compileSdkVersion 24

buildToolsVersion "29.0.2"

defaultConfig {

applicationId "com.example.bins.uiWidgetTest"

minSdkVersion 23

targetSdkVersion 24

versionCode 1

versionName "1.0"

testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

}

buildTypes {

release {

minifyEnabled false

proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'

}

dependencies {

compile fileTree(dir: 'libs', include: ['*.jar'])

androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {

exclude group: 'com.android.support', module: 'support-annotations'

})

compile 'com.android.support:appcompat-v7:24.2.1'

compile 'com.android.support:percent:24.2.1'

compile 'com.android.support:recyclerview-v7:24.2.1'

testCompile 'junit:junit:4.12'

}

配置文件：

apply plugin: 'com.android.application'

android {
    compileSdkVersion 24
    buildToolsVersion "29.0.2"
    defaultConfig {
        applicationId "com.example.bins.activitylifecycletest.ActivityLifeCycle"
        minSdkVersion 23
        targetSdkVersion 24
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile 'com.android.support:appcompat-v7:24.2.1'
    testCompile 'junit:junit:4.12'
}

apply plugin: 'com.android.application'

android {

compileSdkVersion 24

buildToolsVersion "29.0.2"

defaultConfig {

applicationId "com.example.bins.activitylifecycletest.ActivityLifeCycle"

minSdkVersion 23

targetSdkVersion 24

versionCode 1

versionName "1.0"

testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

}

buildTypes {

release {

minifyEnabled false

proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'

}

dependencies {

compile fileTree(dir: 'libs', include: ['*.jar'])

androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {

exclude group: 'com.android.support', module: 'support-annotations'

})

compile 'com.android.support:appcompat-v7:24.2.1'

testCompile 'junit:junit:4.12'

}

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