embed crosswalk in android studio

Question

I'm new about android programming and android studio. I researched crosswalk embed API for my project and tried to embed it in android studio. But I couldn't be succesfull. Even I don't know exactly how can embed an API that has gradle file or not.

Maybe there is a problem with gradle system? In brief, how can I embed crosswalk-webview to my project with android studio step by step? Thanks a lot you.

Answer 1

To embed into new projects or to build with Android Studio 3, you have to change the following four files

This is a sample app.gradle file

apply plugin: 'com.android.application'
android {
    compileSdkVersion 26
    defaultConfig {
        applicationId "online.saai.crosswalkandroid3"
        minSdkVersion 17
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

repositories {
    maven {
        url 'https://download.01.org/crosswalk/releases/crosswalk/android/maven2/'
    }
}

configurations.all {
    resolutionStrategy {
        force 'com.android.support:support-v4:27.1.0'
    }
}

dependencies {
    compile 'org.xwalk:xwalk_core_library:23.53.589.4'
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:26.1.0'
    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.1'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
}

Things to consider,

• To use the latest crosswalk 23.53.589.4 the min sdk version should be >= 16 here I used 17, ie minSdkVersion 17
• maven repository repositories { ... } and compile dependency compile 'org.xwalk:xwalk_core_library:23.53.589.4' should be given to download latest crosswalk
• Note You have to force gradle to use old android support library since there is a incompatibility in version 28 configurations.all { ... }

Once this is done replace your .xml file (activity_main.xml) with the following content, so that it can use crosswalk view

<?xml version="1.0" encoding="utf-8"?>
<org.xwalk.core.XWalkView android:id="@+id/activity_main"
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
</org.xwalk.core.XWalkView>

Now MainActivity.java

public class MainActivity extends Activity {
  private XWalkView mXWalkView;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    mXWalkView = (XWalkView) findViewById(R.id.activity_main);
    mXWalkView.load("http://crosswalk-project.org/", null);
  }
}

Finally allow your application to use internet and other permissions that you need in your application, got to `AndroidManifest.xml' and add this permissions. Here is a sample

<manifest ... />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    ...
<application ... />