update gradle and kotlin version, fix bugs

Author: xiangdong.cheng

app/build.gradle

@@ -1,9 +1,9 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-android-extensions'
 
 android {
-    compileSdkVersion 27
-    buildToolsVersion '27.0.3'
+    compileSdkVersion 28
     defaultConfig {
         applicationId "com.dx.dxloadingbutton"
         minSdkVersion 21
@@ -25,10 +25,10 @@ dependencies {
     androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
-    implementation 'com.android.support:appcompat-v7:27.1.1'
+    implementation 'com.android.support:appcompat-v7:28.0.0'
     testImplementation 'junit:junit:4.12'
     implementation project(':library')
-    compile "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
 }
 repositories {
     mavenCentral()

app/src/main/AndroidManifest.xml

@@ -1,22 +1,24 @@
 <?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.dx.dxloadingbutton">
 
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:supportsRtl="true"
-        android:theme="@style/AppTheme">
-        <activity android:name=".MainActivity">
+        android:theme="@style/AppTheme"
+        tools:ignore="GoogleAppIndexingWarning">
+        <activity android:name=".DemoActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
 
-        <activity android:name=".demo.DemoActivity" />
+        <activity android:name=".demo.LoginDemoActivity" />
 
         <activity android:name=".demo.SecondActivity" />
 

app/src/main/java/com/dx/dxloadingbutton/DemoActivity.kt

@@ -0,0 +1,64 @@
+package com.dx.dxloadingbutton
+
+import android.content.Intent
+import android.graphics.LinearGradient
+import android.graphics.Shader
+import android.graphics.Typeface
+import android.os.Bundle
+import android.support.v7.app.AppCompatActivity
+import android.view.View
+import android.widget.Toast
+import com.dx.dxloadingbutton.demo.LoginDemoActivity
+import kotlinx.android.synthetic.main.activity_main.*
+
+
+class DemoActivity : AppCompatActivity(), View.OnClickListener {
+
+
+    override fun onClick(view: View) {
+        when (view.id) {
+            R.id.loading_btn -> {
+                loading_btn.startLoading()
+                loading_btn.isEnabled = false
+            }
+            R.id.btn_success -> loading_btn.loadingSuccessful()
+            R.id.btn_failed -> loading_btn.loadingFailed()
+            R.id.btn_reset -> {
+                loading_btn.reset()
+                loading_btn.isEnabled = true
+            }
+            R.id.btn_cancel -> {
+                loading_btn.cancelLoading()
+                loading_btn.isEnabled = true
+            }
+            R.id.btn_demo -> {
+                loading_btn.cancelLoading()
+                startActivity(Intent(this@DemoActivity, LoginDemoActivity::class.java))
+            }
+            R.id.btn_enable -> loading_btn.isEnabled = !loading_btn.isEnabled
+        }
+    }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+
+        loading_btn.rippleColor = 0x33ffffff
+        loading_btn.typeface = Typeface.SERIF
+        loading_btn.setOnClickListener(this)
+        loading_btn.cornerRadius = 100f
+        val shader = LinearGradient(0f, 0f, 1000f, 100f, -0x551ac6cb, -0x5500a8de, Shader.TileMode.CLAMP)
+        loading_btn.backgroundShader = shader
+        loading_btn.animationEndAction = {
+            Toast.makeText(applicationContext, "end:$it", Toast.LENGTH_SHORT).show()
+        }
+
+        btn_success.setOnClickListener(this)
+        btn_failed.setOnClickListener(this)
+        btn_reset.setOnClickListener(this)
+        btn_cancel.setOnClickListener(this)
+        btn_demo.setOnClickListener(this)
+        btn_enable.setOnClickListener(this)
+
+    }
+}