jetpack viewmodel+livedata demo

app/build.gradle

@@ -55,7 +55,6 @@ dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
     api "com.tencent.bugly:crashreport_upgrade:1.3.4"
     api 'com.tencent.bugly:nativecrashreport:3.6.0.1'
-//    api(name:'fastDevelop-release', ext:'aar')
     api project(':fastDevelop')
     api project(':web')
     api project(':map')

build.gradle

 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
+    ext.kotlin_version = '1.3.61'
+
 
     repositories {
         google()
@@ -10,6 +12,7 @@ buildscript {
         classpath 'com.android.tools.build:gradle:3.5.2'
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }
 
@@ -18,7 +21,7 @@ allprojects {
         google()
         jcenter()
         maven {
-            url"https://raw.githubusercontent.com/GCkinbg/repos/master"
+            url "https://raw.githubusercontent.com/GCkinbg/repos/master"
         }
     }
 }
@@ -26,4 +29,3 @@ allprojects {
 task clean(type: Delete) {
     delete rootProject.buildDir
 }
-

fastDevelop/build.gradle

@@ -30,7 +30,11 @@ android {
 
 dependencies {
     api fileTree(include: ['*.jar'], dir: 'libs')
-
+    api 'androidx.multidex:multidex:2.0.0'
+    api "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    api 'androidx.core:core-ktx:1.0.2'
+    api 'androidx.activity:activity-ktx:1.1.0'
+    api "androidx.appcompat:appcompat:1.2.0-alpha01"
     api 'androidx.constraintlayout:constraintlayout:1.1.3'
     api 'androidx.recyclerview:recyclerview:1.0.0'
 
@@ -47,6 +51,5 @@ dependencies {
 //    api project(':call')
     api 'com.gc:call:1.0.0'
     api 'com.google.android.exoplayer:exoplayer:2.10.5'
-    api 'androidx.multidex:multidex:2.0.0'
     api 'com.tencent:mmkv:1.0.23'
 }
\ No newline at end of file

fastDevelop/src/main/java/com/mayi/fastdevelop/util/BitmapUtil.java

@@ -469,19 +469,6 @@ public class BitmapUtil {
     }
 
     /**
-     * 缩放网络图片
-     *
-     * @param url    图片Url
-     * @param width  宽
-     * @param height 高
-     * @return bitmap
-     */
-    public static Bitmap getBitmapFromUrl(String url, int width, int height) {
-        Bitmap bitmap = getBitmapFromUrl(url);
-        return scaledBitmap(bitmap, width, height);
-    }
-
-    /**
      * 获取图片InputStream
      *
      * @param urlPath 网络Url
@@ -500,17 +487,6 @@ public class BitmapUtil {
     }
 
     /**
-     * 根据网络Url 获取Drawable
-     *
-     * @param url 网络Url
-     * @return Drawable
-     * @throws Exception
-     */
-    public static Drawable getDrawableFromUrl(String url) throws Exception {
-        return Drawable.createFromStream(getRequest(url), null);
-    }
-
-    /**
      * 旋转图片
      *
      * @param b       图片对象

jetpacksample/.gitignore

+/build

jetpacksample/build.gradle

+apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-android-extensions'
+android {
+    compileSdkVersion 28
+
+
+    defaultConfig {
+        minSdkVersion 23
+        targetSdkVersion 28
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        consumerProguardFiles 'consumer-rules.pro'
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
+
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+//    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+//    implementation 'androidx.core:core-ktx:1.0.2'
+//    implementation 'androidx.activity:activity-ktx:1.1.0'
+//    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    api project(':fastDevelop')
+}

jetpacksample/proguard-rules.pro

+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

jetpacksample/src/main/AndroidManifest.xml

+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    package="com.example.jetpacksample">
+
+    <application
+        android:name=".MyApplication"
+        tools:replace="android:appComponentFactory"
+        android:allowBackup="true"
+        android:appComponentFactory="androidx.core.app.CoreComponentFactory"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.AppCompat.Light.NoActionBar">
+
+        <activity
+            android:name="MainActivity"
+            android:screenOrientation="portrait">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+    </application>
+
+</manifest>
\ No newline at end of file

jetpacksample/src/main/java/com/example/jetpacksample/CommonObject.kt

+package com.example.jetpacksample
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.ViewModelProvider
+
+object BaseVMFactory : ViewModelProvider.Factory {
+
+    override fun <T : ViewModel?> create(modelClass: Class<T>): T {
+        try {
+            return modelClass.newInstance()
+        } catch (e: InstantiationException) {
+            throw RuntimeException("Cannot create an instance of $modelClass", e)
+        } catch (e: IllegalAccessException) {
+            throw RuntimeException("Cannot create an instance of $modelClass", e)
+        }
+    }
+
+
+}
\ No newline at end of file

jetpacksample/src/main/java/com/example/jetpacksample/DataBean.kt

+package com.example.jetpacksample
+
+class DataBean {
+
+     var msg: String? = null
+     var ok: Boolean = false
+     var data: List<ItemDataBean>? = null
+
+}
+
+class ItemDataBean {
+
+    var time: String? = null
+
+}
\ No newline at end of file

jetpacksample/src/main/java/com/example/jetpacksample/ItemAdapter.kt

+package com.example.jetpacksample
+
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.recyclerview.widget.RecyclerView
+import kotlinx.android.synthetic.main.item_layout.view.*
+
+class ItemAdapter : RecyclerView.Adapter<RecyclerView.ViewHolder>() {
+
+     val list: ArrayList<ItemDataBean>? = ArrayList<ItemDataBean>()
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
+        return ItemViewHolder(LayoutInflater.from(parent!!.context).inflate(R.layout.item_layout, parent, false))
+    }
+
+    override fun getItemCount(): Int {
+        return list!!.size
+    }
+
+    override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
+        holder.itemView.tv.setText(list?.get(position)!!.time)
+    }
+
+}
+
+class ItemViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
+}
\ No newline at end of file

jetpacksample/src/main/java/com/example/jetpacksample/MainActivity.kt

+package com.example.jetpacksample
+
+import android.os.Bundle
+import androidx.activity.viewModels
+import androidx.lifecycle.Observer
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import com.mayi.fastdevelop.base.BaseActivity
+import kotlinx.android.synthetic.main.activity_main.*
+
+class MainActivity : BaseActivity() {
+
+    private val viewmodel: MainViewModel by viewModels<MainViewModel>()
+    private var itemAdapter: ItemAdapter? = null
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+        itemAdapter = ItemAdapter()
+        list.layoutManager = LinearLayoutManager(this, RecyclerView.VERTICAL, false)
+        list.adapter = itemAdapter
+        viewmodel.liveData.observe(this, Observer {
+            if (it != null) {
+                dismssLoadingDialog()
+                if (it.ok) {
+                    it!!.data?.let { it1 ->
+                        itemAdapter!!.list!!.addAll(it1)
+                        itemAdapter!!.notifyDataSetChanged()
+                    }
+                } else {
+                    showToast(it.msg)
+                }
+            }
+        })
+        bottom.setOnClickListener {
+            showLoadingDialog()
+            viewmodel!!.requestData("1")
+        }
+    }
+}
\ No newline at end of file

jetpacksample/src/main/java/com/example/jetpacksample/MainViewModel.kt

+package com.example.jetpacksample
+
+import android.os.Handler
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+import com.mayi.fastdevelop.util.DateUtil
+import java.lang.System.currentTimeMillis
+
+class MainViewModel : ViewModel() {
+
+    val liveData = MutableLiveData<DataBean>()
+    val h = Handler()
+
+    fun requestData(parameter: String) {
+        h.postDelayed(Runnable {
+            //模拟网络访问
+            val data = DataBean()
+            if (currentTimeMillis() % 2 == 0L) {
+                data.ok = true
+                val item = ItemDataBean()
+                item.time = DateUtil.getCurrentTime()
+                data.data = listOf(item)
+            } else {
+                data.ok = false
+                data.msg = "请求失败"
+            }
+            liveData.setValue(data)
+        }, 1000)
+    }
+
+}
\ No newline at end of file

jetpacksample/src/main/java/com/example/jetpacksample/MyApplication.java

+package com.example.jetpacksample;
+
+import android.app.Application;
+
+public class MyApplication extends Application {
+
+    @Override
+    public void onCreate() {
+        super.onCreate();
+    }
+}
+
+

jetpacksample/src/main/res/layout/activity_main.xml

+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity">
+
+    <Button
+        android:id="@+id/bottom"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="请求数据"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/list"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/bottom" />
+
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file

jetpacksample/src/main/res/layout/item_layout.xml

+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical">
+
+    <TextView
+        android:id="@+id/tv"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:padding="@dimen/size_10"
+        android:text="2019-11-11 10:10:10" />
+
+</LinearLayout>
\ No newline at end of file

jetpacksample/src/main/res/values/strings.xml

+<resources>
+    <string name="app_name">JetPackSample</string>
+</resources>

settings.gradle

-include ':app', ':fastDevelop', ':map', ':web'
+include ':app', ':fastDevelop', ':map', ':web', ':jetpacksample'
\ No newline at end of file