初始版本：

支持：设置文本标题
支持：设置自定义View标题
支持：设置关闭按钮
支持：设置文本正文
支持：设置自定义View
支持：标题栏上下滑动来扩展

app/build.gradle

@@ -13,7 +13,7 @@ android {
         versionCode 1
         versionName "1.0"
 
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+        testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
     }
 
     buildTypes {
@@ -33,9 +33,10 @@ android {
 
 dependencies {
 
-    implementation 'com.android.support:appcompat-v7:28.0.0'
-    implementation 'com.android.support.constraint:constraint-layout:2.0.4'
+    implementation 'androidx.appcompat:appcompat:1.4.1'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.3'
     testImplementation 'junit:junit:4.13.2'
-    androidTestImplementation 'com.android.support.test:runner:1.0.2'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+    implementation project(path:':POPDialog')
 }

app/src/androidTest/java/com/yutou/pop_up_dialog/ExampleInstrumentedTest.kt

@@ -1,7 +1,7 @@
 package com.yutou.pop_up_dialog
 
-import android.support.test.InstrumentationRegistry
-import android.support.test.runner.AndroidJUnit4
+import androidx.test.platform.app.InstrumentationRegistry
+import androidx.test.ext.junit.runners.AndroidJUnit4
 
 import org.junit.Test
 import org.junit.runner.RunWith

app/src/main/java/com/yutou/pop_up_dialog/MainActivity.kt

@@ -1,11 +1,52 @@
 package com.yutou.pop_up_dialog
 
-import android.support.v7.app.AppCompatActivity
 import android.os.Bundle
+import android.view.ViewGroup
+import android.widget.ArrayAdapter
+import android.widget.FrameLayout
+import android.widget.ListView
+import android.widget.TextView
+import androidx.appcompat.app.AppCompatActivity
+import com.yutou.popdialog.POPDialog
 
 class MainActivity : AppCompatActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
+        val textView = findViewById<TextView>(R.id.dialog_textView)
+        textView.setOnClickListener {
+            showDialog()
+        }
+        showDialog()
+    }
+
+
+    fun showDialog() {
+        val params = FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 300)
+        val textView = TextView(this@MainActivity)
+        textView.text = "aaaaaaaaaaaaaa"
+        textView.layoutParams = params
+
+        val dialog = POPDialog(this)
+        //dialog.setTitle(textView)
+        dialog.setTitle("标题")
+        //dialog.setMessage("正文测试")
+        //dialog.setContentView(textView)
+        dialog.setContentView(getListView())
+        dialog.enableExitButton(true)
+        dialog.show()
+    }
+
+    private fun getListView(): ListView {
+        val listView = ListView(this@MainActivity)
+        val list = ArrayList<String>()
+
+        for (i in 1..50) {
+            list.add("item is $i")
+        }
+        listView.adapter =
+            ArrayAdapter<String>(this@MainActivity, android.R.layout.simple_list_item_1, list)
+
+        return listView
     }
 }

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

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<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"
@@ -7,6 +7,7 @@
     tools:context=".MainActivity">
 
     <TextView
+        android:id="@+id/dialog_textView"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="Hello World!"
@@ -15,4 +16,5 @@
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
-</android.support.constraint.ConstraintLayout>
+
+</androidx.constraintlayout.widget.ConstraintLayout>