我需要在android studio中为应用程序创建一个演示风格.在我的应用程序级gradle文件中,我创建了另一种名为demo的风格,当然还有默认的风味.它看起来像这样：

apply plugin: 'com.android.application'

android {

compileSdkVersion 22

buildToolsVersion "21.1.2"

defaultConfig {

applicationId "com.example.uen229.myapplication"

minSdkVersion 17

targetSdkVersion 22

versionCode 1

versionName "1.0"

}

buildTypes {

release {

minifyEnabled false

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

}

}

productFlavors {

demo {

applicationId "com.buildsystemexample.app.demo"

versionName "1.0-demo"

}

full {

applicationId "com.buildsystemexample.app.full"

versionName "1.0-full"

}

}

}

dependencies {

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

compile 'com.android.support:appcompat-v7:22.2.0'

}

这是我的项目结构的图像,我在其中创建了一个demo flavor目录：

现在谈到这个问题.我有两个名为Hello.java的类.两者都有各自的风味和印刷不同的东西.我现在给你看两个文件：

import android.util.Log;

/** this is from demo flavor directory**/

public class Hello {

Hello(){

Log.v("","hello from demo");

}

public String getName();

return "im from demo";

};

}

这是另一个你好：

package com.example.uen229.myapplication;

import android.util.Log;

/** this is from full or main flavor directory**/

public class Hello {

Hello(){

Log.v("", "hello from main");

}

public String getName(){

return "im from main";

};

}

注意第一个hello.java如何没有包,即使我有一个IDE不会编译的包.看这张照片：

现在最后让我们看看mainActivity.java,看看当我切换构建变体时,它只为“im from main”干杯,但如果我使用demoDebug构建版本,我需要它来打印’im from demo’.如果我切换构建变体demoDebug它仍然打印“im from main”.任何人都可以帮忙：

public class MainActivity extends ActionBarActivity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

Hello h = new Hello();

Toast.makeText(this, h.getName(), Toast.LENGTH_LONG).show();

}

}

UPDATE

从stackoverflow它说：

If you want to have a different version of the same class in the two

flavor you’ll need to create it in both flavors.

06004

And then your code in src/main/java can do:

06005

depending on the flavor selected, the right version of com.foo.A is

used.

这是我想用Hello类完成的