kotlin anko 第一个项目

Love The Way You Lie 2022-04-03 08:51 191阅读 0赞

参考链接：[官方kotlinAnko][kotlinAnko] [anko-example][]

官方提供 demo 提示一下错误

org.gradle.api.internal.artifacts.ivyservice.DefaultLenientConfiguration$ArtifactResolveException: Could not resolve all files for configuration ':classpath

按照提示修改 project build.gradle

ext.kotlin\_version = '1.1.2'  -->  1.2.31  // 我本地的kotlin 下载的插件版本

classpath 'com.android.tools.build:gradle:2.4.0-alpha7' --> com.android.tools.build:gradle:3.0.1

继续出错：

Unable to find method 'com.android.build.gradle.internal.variant.BaseVariantData.getOutputs()Ljava/util/List;'.  
Possible causes for this unexpected error include:<ul><li>Gradle's dependency cache may be corrupt (this sometimes occurs after a network connection timeout.)  
Re-download dependencies and sync project (requires network)</li><li>The state of a Gradle build process (daemon) may be corrupt. Stopping all Gradle daemons may solve this problem.  
Stop Gradle build processes (requires restart)</li><li>Your project may be using a third-party plugin which is not compatible with the other plugins in the project or the version of Gradle requested by the project.</li></ul>In the case of corrupt Gradle processes, you can also try closing the IDE and then killing all Java processes.  
下载不成功对应的 .jar 包。重复下载一直提示错误，修改了 ext.kotlin\_version = '1.1.2'  --》 ext.kotlin\_version = '1.2.31' 工程终于不报错。最终 project bugild.gradle 配置。

buildscript {
        ext.kotlin_version = '1.2.31'
        ext.anko_version = '0.10.0-beta-2'
    
        repositories {
            jcenter()
            google()
        }
        dependencies {
            classpath 'com.android.tools.build:gradle:3.0.1'
            classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        }
    }
    
    allprojects {
        repositories {
            jcenter()
            maven { url "http://dl.bintray.com/kotlin/kotlin-dev" }
        }
    }

以为已经可以直接运行然而并没有。run 以后又出一下错误：

gravity = CENTER 报错，布局中直接使用错误，应该替换为 setGravity(Gravity.CENTER)

后续错误又来：

E:\android_kotlin\anko-example\app\src\main\java\org\example\ankodemo\RichView.kt: (59, 79): None of the following functions can be called with the arguments supplied:
    public constructor LinearLayout(p0: Context!) defined in android.widget.LinearLayout
    public constructor LinearLayout(p0: Context!, p1: AttributeSet!) defined in android.widget.LinearLayout

注释三个参数的 constructor 方法。代码终于可以运行。 修改后自定义 View 代码。刚学习，不清楚具体原因后续有时间好好找找原因。

class RichView : LinearLayout {
        private lateinit var image: ImageView
        private lateinit var text: TextView
    
        private fun init() = AnkoContext.createDelegate(this).apply {
            padding = dip(24)
            setGravity(Gravity.CENTER)
            image = imageView(imageResource = R.drawable.kotlin) {
                onClick { startAnimation() }
    //            gravity = CENTER_VERTICAL
                padding = dip(8)
                layoutParams = LinearLayout.LayoutParams(dip(48), dip(48))
            }
    
            text = textView("Anko Rich view") {
                textSize = 19f
            }
    
            startAnimation()
        }
    
        private fun startAnimation() {
            if (image.animation != null) return
    
            image.startAnimation(ScaleAnimation(1f, 1.3f, 1f, 1.3f,
                    Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f
            ).apply {
                repeatCount = 1
                repeatMode = Animation.REVERSE
                duration = 1000
            })
        }
    
        constructor(context: Context?) : super(context) {
            init()
        }
    
        constructor(context: Context?, attrs: AttributeSet?) : super(context, attrs) {
            init()
        }
    
        /*constructor(context: Context?, attrs: AttributeSet?, defStyleAttr: Int) : super(context, attrs, defStyleAttr) {
            init()
        }*/
    }
    
    @Suppress("NOTHING_TO_INLINE")
    inline fun ViewManager.myRichView(theme: Int = 0) = myRichView({}, theme)
    inline fun ViewManager.myRichView(init: RichView.() -> Unit, theme: Int = 0) = ankoView(::RichView, theme, init)

自己写了一个 demo 页面

class HelloAnkoActivity : AppCompatActivity() {
    
        override fun onCreate(savedInstanceState: Bundle?) {
            super.onCreate(savedInstanceState)
            HelloAnkoActivityUI().setContentView(this)
        }
    }
    
    class HelloAnkoActivityUI : AnkoComponent<HelloAnkoActivity> {
        override fun createView(ui: AnkoContext<HelloAnkoActivity>) = with(ui) {
           // TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
    
            verticalLayout {
                padding = dip(15)
                backgroundColor = Color.rgb(88, 88, 88)
    
                val tv = textView {
                    text = "hello Anko"
                    textSize = resources.getDimension(R.dimen.abc_text_size_medium_material)
                    textColor = ContextCompat.getColor(context, R.color.abc_background_cache_hint_selector_material_dark)
                }
                tv.setOnClickListener {
                    val srt = "ssss${tv.text}"
                    print(srt)
                }
                button {
                    text = "Click Toast text"
                    onClick {
                        toast(tv.text)
                    }
                }
                button{
                    text = "radioButton"
                    textColor = Color.YELLOW
                    onClick {
                        Snackbar.make(view, "snackbar${text}", Snackbar.LENGTH_LONG).setAction("返回") {
                            ui.owner.finish()
                        }.show()
                    }
                }
            }      
        }
    }

[kotlinAnko]: https://github.com/kotlin/anko
[anko-example]: https://github.com/kotlin/anko-example