Kotlin 和 Swift, 两大新宠! 借 ReactNative 熟悉下 kotlin 的用法,不料掉坑里面了.昨晚花了大半夜,趁这会儿思路清晰,把涉及到的一些关键信息,迅速整理下.
package com.awesomeproject.AnExampleReactPackage
import android.widget.Toast
import com.facebook.react.bridge.ReactApplicationContext
import com.facebook.react.bridge.ReactContextBaseJavaModule
import com.facebook.react.bridge.ReactMethod
import java.util.HashMap
/**
* Created by yanfeng on 2017/10/12.
*/
class ToastModule(reactContext: ReactApplicationContext) : ReactContextBaseJavaModule(reactContext) {
override fun getName(): String {
return "ToastExample"
}
override fun getConstants(): Map<String, Any>? {
val constants = HashMap<String, Any>()
constants.put(DURATION_SHORT_KEY, Toast.LENGTH_SHORT)
constants.put(DURATION_LONG_KEY, Toast.LENGTH_LONG)
return constants
}
@ReactMethod
fun show(message: String, duration: Int) {
Toast.makeText(reactApplicationContext, message, duration).show()
}
companion object {
private val DURATION_SHORT_KEY = "SHORT"
private val DURATION_LONG_KEY = "LONG"
}
}
npm install -g nrm
nrm use taobao
npm install -g react-native-cli --verbose
react-native init AwesomeProject --verboses
命令是:
./gradlew -q dependencies app:dependencies --configuration compile
可能的输出:
+--- com.android.support.constraint:constraint-layout:1.0.0-beta2
| \--- com.android.support.constraint:constraint-layout-solver:1.0.0-beta2
\--- com.facebook.react:react-native:+ -> 0.20.1
+--- com.google.code.findbugs:jsr305:3.0.0
+--- com.facebook.stetho:stetho-okhttp:1.2.0
| +--- com.google.code.findbugs:jsr305:2.0.1 -> 3.0.0
| +--- com.facebook.stetho:stetho:1.2.0
| | +--- com.google.code.findbugs:jsr305:2.0.1 -> 3.0.0
| | \--- commons-cli:commons-cli:1.2
| \--- com.squareup.okhttp:okhttp:2.2.0 -> 2.5.0
| \--- com.squareup.okio:okio:1.6.0
+--- com.squareup.okhttp:okhttp-ws:2.5.0
| \--- com.squareup.okhttp:okhttp:2.5.0 (*)
+--- com.facebook.fresco:fresco:0.8.1
| +--- com.facebook.fresco:imagepipeline:0.8.1
| | +--- com.nineoldandroids:library:2.4.0
| | +--- com.facebook.fresco:fbcore:0.8.1
| | +--- com.android.support:support-v4:21.0.3 -> 23.0.1
| | | \--- com.android.support:support-annotations:23.0.1
| | \--- com.parse.bolts:bolts-android:1.1.4
| +--- com.facebook.fresco:fbcore:0.8.1
| \--- com.facebook.fresco:drawee:0.8.1
| +--- com.facebook.fresco:fbcore:0.8.1
| \--- com.android.support:support-v4:21.0.3 -> 23.0.1 (*)
+--- org.webkit:android-jsc:r174650
+--- com.fasterxml.jackson.core:jackson-core:2.2.3
+--- com.squareup.okhttp:okhttp:2.5.0 (*)
+--- com.facebook.fresco:imagepipeline-okhttp:0.8.1
| +--- com.squareup.okhttp:okhttp:2.3.0 -> 2.5.0 (*)
| +--- com.facebook.fresco:imagepipeline:0.8.1 (*)
| \--- com.facebook.fresco:fbcore:0.8.1
+--- com.squareup.okio:okio:1.6.0
+--- com.android.support:recyclerview-v7:23.0.1
| +--- com.android.support:support-v4:23.0.1 (*)
| \--- com.android.support:support-annotations:23.0.1
+--- com.facebook.stetho:stetho:1.2.0 (*)
\--- com.android.support:appcompat-v7:23.0.1
\--- com.android.support:support-v4:23.0.1 (*)
(*) - dependencies omitted (listed previously)
adb reverse tcp:8081 tcp:8081
https://github.com/ios122/kotlin-module-sample-for-reactnative