如何使用Android順序佈局?
在學習Android順序佈局之前,我們應該瞭解Android中的順序佈局是什麼。順序佈局包含一系列步驟和進度條。根據順序,它會顯示一個動畫進度條。
本例演示瞭如何使用Android順序佈局。
步驟1 − 在Android Studio中建立一個新專案,轉到檔案 ⇒ 新建專案,並填寫所有必需的詳細資訊以建立新專案。
步驟2 − 開啟build.gradle(app)並新增設計支援庫依賴項。
apply plugin: 'com.android.application'
android {
compileSdkVersion 28
defaultConfig {
applicationId "com.example.andy.myapplication"
minSdkVersion 19
targetSdkVersion 28
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.google.code.gson:gson:2.8.5'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
testImplementation 'junit:junit:4.12'
implementation 'com.github.transferwise:sequence-layout:1.0.7'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}步驟3 − 開啟build.gradle(project)並新增設計支援庫依賴項。
// 頂層構建檔案,您可以在其中新增所有子專案/模組共有的配置選項。
buildscript {
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.2.1'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
google()
jcenter()
maven { url "https://jitpack.io" }
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}步驟4 − 將以下程式碼新增到res/layout/activity_main.xml。
<?xml version="1.0" encoding="utf-8"?> <com.transferwise.sequencelayout.SequenceLayout android:layout_width="match_parent" android:layout_height="wrap_content" xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto"> <com.transferwise.sequencelayout.SequenceStep android:id="@+id/first" android:layout_width="match_parent" android:layout_height="wrap_content" app:subtitle="Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s." app:anchor="30 Nov" app:title="First step"/> <com.transferwise.sequencelayout.SequenceStep android:id="@+id/second" android:layout_width="match_parent" android:layout_height="wrap_content" app:subtitle="Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s." app:title="Second step"/> <com.transferwise.sequencelayout.SequenceStep android:id="@+id/third" android:layout_width="match_parent" android:layout_height="wrap_content" app:anchor="Today" app:title="Third step" app:subtitle="Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s" /> </com.transferwise.sequencelayout.SequenceLayout>
在上面,我們將順序佈局宣告為父佈局,並將順序步驟新增為各個步驟。每個步驟都包含錨點檢視、標題和副標題。
步驟5 − 將以下程式碼新增到src/MainActivity.java
package com.example.andy.myapplication;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Toast;
import com.transferwise.sequencelayout.SequenceStep;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
SequenceStep sequenceStep,sequenceStep2,sequenceStep3;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
sequenceStep=findViewById(R.id.first);
sequenceStep2=findViewById(R.id.second);
sequenceStep3=findViewById(R.id.third);
sequenceStep2.setActive(true);
sequenceStep.setOnClickListener(this);
sequenceStep2.setOnClickListener(this);
sequenceStep3.setOnClickListener(this);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.first:
Toast.makeText(MainActivity.this,"This is first step",Toast.LENGTH_LONG).show();
break;
case R.id.second:
Toast.makeText(MainActivity.this,"This is second step",Toast.LENGTH_LONG).show();
break;
case R.id.third:
Toast.makeText(MainActivity.this,"This is Third step",Toast.LENGTH_LONG).show();
break;
}
}
}在上面的程式碼中,我們聲明瞭順序步驟並給出了點選監聽器。要啟用步驟,請使用以下程式碼。
sequenceStep2.setActive(true);
在上面的程式碼中,我們聲明瞭sequence2處於活動狀態,這意味著進度條將顯示到步驟2。
讓我們嘗試執行您的應用程式。我假設您已將您的實際Android移動裝置連線到您的計算機。要在Android Studio中執行應用程式,請開啟專案的活動檔案之一,然後單擊執行
工具欄中的圖示。選擇您的移動裝置作為選項,然後檢查您的移動裝置,它將顯示您的預設螢幕 −

在上面的示例中,由於我們聲明瞭活動模式,因此它顯示了進度條。
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