從手機(jī)頂部劃入园匹，短暫停留后，再從頂部劃出戚丸。
首先需要明確的是：
1划址、這個(gè)彈窗的彈出邏輯不一定是當(dāng)前界面編寫的扔嵌，比如用戶上傳文件，用戶可能繼續(xù)瀏覽其他頁面的內(nèi)容夺颤，但是監(jiān)聽文件是否上傳完成還是在原來的Activity,但是Dialog的彈出是需要當(dāng)前頁面的上下文Context的痢缎。
2、Dialog彈窗必須支持手勢,用戶在Dialog上向上滑時(shí),Dialog需要退出,點(diǎn)擊時(shí)可能需要處理點(diǎn)擊事件世澜。
一独旷、Dialog的編寫
/**
* 通知的自定義Dialog
*/
class NotificationDialog(context: Context, var title: String, var content: String) :
Dialog(context, R.style.dialog_notifacation_top) {
private var mListener: OnNotificationClick? = null
private var mStartY: Float = 0F
private var mView: View? = null
private var mHeight: Int? = 0
init {
mView = LayoutInflater.from(context).inflate(R.layout.common_layout_notifacation, null)
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(mView!!)
window?.setGravity(Gravity.TOP)
val layoutParams = window?.attributes
layoutParams?.width = ViewGroup.LayoutParams.MATCH_PARENT
layoutParams?.height = ViewGroup.LayoutParams.WRAP_CONTENT
layoutParams?.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
window?.attributes = layoutParams
window?.setWindowAnimations(R.style.dialog_animation)
//按空白處不能取消
setCanceledOnTouchOutside(false)
//初始化界面數(shù)據(jù)
initData()
}
private fun initData() {
val tvTitle = findViewById<TextView>(R.id.tv_title)
val tvContent = findViewById<TextView>(R.id.tv_content)
if (title.isNotEmpty()) {
tvTitle.text = title
}
if (content.isNotEmpty()) {
tvContent.text = content
}
}
override fun onTouchEvent(event: MotionEvent): Boolean {
when (event.action) {
MotionEvent.ACTION_DOWN -> {
if (isOutOfBounds(event)) {
mStartY = event.y
}
}
MotionEvent.ACTION_UP -> {
if (mStartY > 0 && isOutOfBounds(event)) {
val moveY = event.y
if (abs(mStartY - moveY) >= 20) { //滑動超過20認(rèn)定為滑動事件
//Dialog消失
} else { //認(rèn)定為點(diǎn)擊事件
//Dialog的點(diǎn)擊事件
mListener?.onClick()
}
dismiss()
}
}
}
return false
}
/**
* 點(diǎn)擊是否在范圍外
*/
private fun isOutOfBounds(event: MotionEvent): Boolean {
val yValue = event.y
if (yValue > 0 && yValue <= (mHeight ?: (0 + 40))) {
return true
}
return false
}
private fun setDialogSize() {
mView?.addOnLayoutChangeListener { v, left, top, right, bottom, oldLeft, oldTop, oldRight, oldBottom ->
mHeight = v?.height
}
}
/**
* 顯示Dialog但是不會自動退出
*/
fun showDialog() {
if (!isShowing) {
show()
setDialogSize()
}
}
/**
* 顯示Dialog,3000毫秒后自動退出
*/
fun showDialogAutoDismiss() {
if (!isShowing) {
show()
setDialogSize()
//延遲3000毫秒后自動消失
Handler(Looper.getMainLooper()).postDelayed({
if (isShowing) {
dismiss()
}
}, 3000L)
}
}
//處理通知的點(diǎn)擊事件
fun setOnNotificationClickListener(listener: OnNotificationClick) {
mListener = listener
}
interface OnNotificationClick {
fun onClick()
}
}
Dialog的主題
<?xml version="1.0" encoding="utf-8"?>
<resources xmlns:tools="http://schemas.android.com/tools">
<style name="dialog_notifacation_top">
<item name="android:windowIsTranslucent">true</item>
<!--設(shè)置背景透明-->
<item name="android:windowBackground">@android:color/transparent</item>
<!--設(shè)置dialog浮與activity上面-->
<item name="android:windowIsFloating">true</item>
<!--去掉背景模糊效果-->
<item name="android:backgroundDimEnabled">false</item>
<item name="android:windowNoTitle">true</item>
<!--去掉邊框-->
<item name="android:windowFrame">@null</item>
</style>
<style name="dialog_animation" parent="@android:style/Animation.Dialog">
<!-- 進(jìn)入時(shí)的動畫 -->
<item name="android:windowEnterAnimation">@anim/dialog_enter</item>
<!-- 退出時(shí)的動畫 -->
<item name="android:windowExitAnimation">@anim/dialog_exit</item>
</style>
</resources>
Dialog的動畫
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate
android:duration="600"
android:fromYDelta="-100%p"
android:toYDelta="0%p" />
</set>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate
android:duration="300"
android:fromYDelta="0%p"
android:toYDelta="-100%p" />
</set>
Dialog的布局，CardView包裹一下就有立體陰影的效果
<androidx.cardview.widget.CardView
android:id="@+id/cd"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="@dimen/size_15dp"
app:cardCornerRadius="@dimen/size_15dp"
app:cardElevation="@dimen/size_15dp"
app:layout_constraintTop_toTopOf="parent">
<androidx.constraintlayout.widget.ConstraintLayout
android:id="@+id/et_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="@dimen/size_15dp"
app:layout_constraintTop_toTopOf="parent">
<androidx.appcompat.widget.AppCompatTextView
android:id="@+id/tv_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#000000"
android:textSize="@dimen/font_14sp" android:textStyle="bold"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<androidx.appcompat.widget.AppCompatTextView
android:id="@+id/tv_content"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/size_15dp"
android:textColor="#333"
android:textSize="@dimen/font_12sp"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toBottomOf="@id/tv_title" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.cardview.widget.CardView>
二寥裂、獲取當(dāng)前顯示的Activity的弱引用
/**
* 前臺Activity管理類
*/
class ForegroundActivityManager {
private var currentActivityWeakRef: WeakReference<Activity>? = null
companion object {
val TAG = "ForegroundActivityManager"
private val instance = ForegroundActivityManager()
@JvmStatic
fun getInstance(): ForegroundActivityManager {
return instance
}
}
fun getCurrentActivity(): Activity? {
var currentActivity: Activity? = null
if (currentActivityWeakRef != null) {
currentActivity = currentActivityWeakRef?.get()
}
return currentActivity
}
fun setCurrentActivity(activity: Activity) {
currentActivityWeakRef = WeakReference(activity)
}
}
監(jiān)聽所有Activity的生命周期
class AppLifecycleCallback:Application.ActivityLifecycleCallbacks {
companion object{
val TAG = "AppLifecycleCallback"
}
override fun onActivityCreated(activity: Activity, savedInstanceState: Bundle?) {
//獲取Activity弱引用
ForegroundActivityManager.getInstance().setCurrentActivity(activity)
}
override fun onActivityStarted(activity: Activity) {
}
override fun onActivityResumed(activity: Activity) {
//獲取Activity弱引用
ForegroundActivityManager.getInstance().setCurrentActivity(activity)
}
override fun onActivityPaused(activity: Activity) {
}
override fun onActivityStopped(activity: Activity) {
}
override fun onActivitySaveInstanceState(activity: Activity, outState: Bundle) {
}
override fun onActivityDestroyed(activity: Activity) {
}
}
在Application中注冊
//注冊Activity生命周期
registerActivityLifecycleCallbacks(AppLifecycleCallback())
三嵌洼、封裝和使用
/**
* 通知的管理類
* example:
* //發(fā)系統(tǒng)通知
* NotificationControlManager.getInstance()?.notify("文件上傳完成", "文件上傳完成,請點(diǎn)擊查看詳情")
* //發(fā)應(yīng)用內(nèi)通知
* NotificationControlManager.getInstance()?.showNotificationDialog("文件上傳完成","文件上傳完成,請點(diǎn)擊查看詳情",
* object : NotificationControlManager.OnNotificationCallback {
* override fun onCallback() {
* Toast.makeText(this@MainActivity, "被點(diǎn)擊了", Toast.LENGTH_SHORT).show()
* }
* })
*/
class NotificationControlManager {
private var autoIncreament = AtomicInteger(1001)
private var dialog: NotificationDialog? = null
companion object {
const val channelId = "aaaaa"
const val description = "描述信息"
@Volatile
private var sInstance: NotificationControlManager? = null
@JvmStatic
fun getInstance(): NotificationControlManager? {
if (sInstance == null) {
synchronized(NotificationControlManager::class.java) {
if (sInstance == null) {
sInstance = NotificationControlManager()
}
}
}
return sInstance
}
}
/**
* 是否打開通知
*/
fun isOpenNotification(): Boolean {
val notificationManager: NotificationManagerCompat =
NotificationManagerCompat.from(
ForegroundActivityManager.getInstance().getCurrentActivity()!!
)
return notificationManager.areNotificationsEnabled()
}
/**
* 跳轉(zhuǎn)到系統(tǒng)設(shè)置頁面去打開通知，注意在這之前應(yīng)該有個(gè)Dialog提醒用戶
*/
fun openNotificationInSys() {
val context = ForegroundActivityManager.getInstance().getCurrentActivity()!!
val intent: Intent = Intent()
try {
intent.action = Settings.ACTION_APP_NOTIFICATION_SETTINGS
//8.0及以后版本使用這兩個(gè)extra. >=API 26
intent.putExtra(Settings.EXTRA_APP_PACKAGE, context.packageName)
intent.putExtra(Settings.EXTRA_CHANNEL_ID, context.applicationInfo.uid)
//5.0-7.1 使用這兩個(gè)extra. <= API 25, >=API 21
intent.putExtra("app_package", context.packageName)
intent.putExtra("app_uid", context.applicationInfo.uid)
context.startActivity(intent)
} catch (e: Exception) {
e.printStackTrace()
//其他低版本或者異常情況封恰，走該節(jié)點(diǎn)麻养。進(jìn)入APP設(shè)置界面
intent.action = Settings.ACTION_APPLICATION_DETAILS_SETTINGS
intent.putExtra("package", context.packageName)
//val uri = Uri.fromParts("package", packageName, null)
//intent.data = uri
context.startActivity(intent)
}
}
/**
* 發(fā)通知
* @param title 標(biāo)題
* @param content 內(nèi)容
* @param cls 通知點(diǎn)擊后跳轉(zhuǎn)的Activity,默認(rèn)為null跳轉(zhuǎn)到MainActivity
*/
fun notify(title: String, content: String, cls: Class<*>) {
val context = ForegroundActivityManager.getInstance().getCurrentActivity()!!
val notificationManager =
context.getSystemService(AppCompatActivity.NOTIFICATION_SERVICE) as NotificationManager
val builder: Notification.Builder
val intent = Intent(context, cls)
val pendingIntent: PendingIntent? = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
PendingIntent.getActivity(context, 0, intent, PendingIntent.FLAG_IMMUTABLE)
} else {
PendingIntent.getActivity(context, 0, intent, PendingIntent.FLAG_ONE_SHOT)
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
val notificationChannel =
NotificationChannel(channelId, description, NotificationManager.IMPORTANCE_HIGH)
notificationChannel.enableLights(true);
notificationChannel.lightColor = Color.RED;
notificationChannel.enableVibration(true);
notificationChannel.vibrationPattern =
longArrayOf(100, 200, 300, 400, 500, 400, 300, 200, 400)
notificationManager.createNotificationChannel(notificationChannel)
builder = Notification.Builder(context, channelId)
.setSmallIcon(R.drawable.jpush_notification_icon)
.setContentIntent(pendingIntent)
.setContentTitle(title)
.setContentText(content)
} else {
builder = Notification.Builder(context)
.setSmallIcon(R.drawable.jpush_notification_icon)
.setLargeIcon(
BitmapFactory.decodeResource(
context.resources,
R.drawable.jpush_notification_icon
)
)
.setContentIntent(pendingIntent)
.setContentTitle(title)
.setContentText(content)
}
notificationManager.notify(autoIncreament.incrementAndGet(), builder.build())
}
/**
* 顯示應(yīng)用內(nèi)通知的Dialog,需要自己處理點(diǎn)擊事件。listener默認(rèn)為null,不處理也可以俭驮。dialog會在3000毫秒后自動消失
* @param title 標(biāo)題
* @param content 內(nèi)容
* @param listener 點(diǎn)擊的回調(diào)
*/
fun showNotificationDialog(
title: String,
content: String,
listener: OnNotificationCallback? = null
) {
val activity = ForegroundActivityManager.getInstance().getCurrentActivity()!!
dialog = NotificationDialog(activity, title, content)
if (Thread.currentThread() != Looper.getMainLooper().thread) { //子線程
activity.runOnUiThread {
showDialog(dialog, listener)
}
} else {
showDialog(dialog, listener)
}
}
/**
* show dialog
*/
private fun showDialog(
dialog: NotificationDialog?,
listener: OnNotificationCallback?
) {
dialog?.showDialogAutoDismiss()
if (listener != null) {
dialog?.setOnNotificationClickListener(object :
NotificationDialog.OnNotificationClick {
override fun onClick() = listener.onCallback()
})
}
}
/**
* dismiss Dialog
*/
fun dismissDialog() {
if (dialog != null && dialog!!.isShowing) {
dialog!!.dismiss()
}
}
interface OnNotificationCallback {
fun onCallback()
}
}
另外需要注意的點(diǎn)是,因?yàn)閐ialog是延遲關(guān)閉的,可能用戶立刻退出Activity,導(dǎo)致延遲時(shí)間到時(shí)dialog退出時(shí)報(bào)錯,解決辦法可以在BaseActivity的onDestroy方法中嘗試關(guān)閉Dialog：
override fun onDestroy() {
super.onDestroy()
NotificationControlManager.getInstance()?.dismissDialog()
}
