Kotlin Android 地方 API 自动完成
Kotlin Android Places API Autocomplete
感谢观看。正如标题所暗示的那样，我在当前的 Kotlin 项目中面临着一个相当 "weird" 的问题。在我的应用程序中，用户可以单击一个按钮（或用作按钮的文本输入），然后会弹出一个新的意图，用户可以在其中键入位置。
这里有一个小片段：
R.id.et_location -> {
try{
// This is the list of fields that need to be passed
val fields = listOf(Place.Field.ID, Place.Field.NAME, Place.Field.LAT_LNG, Place.Field.ADDRESS)
// Start the autocomplete intent with a unique request code.
val intent = Autocomplete.IntentBuilder(AutocompleteActivityMode.FULLSCREEN, fields).build(this@AddHappyPlaceActivity)
startActivityForResult(intent, PLACE_AUTOCOMPLETE_REQUEST_CODE)
}catch (e: Exception) {
e.printStackTrace()
Toast.makeText(this, "Couldnt load it", Toast.LENGTH_SHORT).show()}
一切正常，所以 Window 弹出但是当我开始输入类似 "Dub" 的内容时（以迪拜为例）它显示了一些条目，但是如果我输入 1-又多了 2 个字符，它突然说 "Can't load search results"。有时搜索根本不起作用。我用谷歌搜索了这个问题，人们建议 API 键可能有问题，但如果键有问题，它首先不会工作，只是关闭 Intent（我试过).
我用 API 键尝试了一些东西。首先，我创建的第一个密钥有问题，它根本不起作用。我生成的第二个密钥部分起作用（我目前的情况）。第一个密钥仅限于我的 package/sha1。
如您所见，第二个键没有任何限制，但比第一个键效果更好。我现在不确定是我的 API 键导致了这个问题还是我的代码。下面我将分享相关的代码。
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="eu.sampa.happyPlaces">
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<!-- Several permissions -->
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.CAMERA" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<meta-data
android:name="com.google.android.geo.API_KEY"
android:value="@string/google_maps_key" />
<activity
android:name=".activities.HappyPlaceDetailActivity"
android:label="HAPPY PLACE DETAILS"
android:screenOrientation="portrait"
android:theme="@style/CustomNoActionBarTheme" />
<activity
android:name=".activities.AddHappyPlaceActivity"
android:label="ADD HAPPY PLACE"
android:screenOrientation="portrait"
android:theme="@style/CustomNoActionBarTheme" />
<activity android:name=".activities.MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
google_maps_api.xml（我在发帖前删除了我的 SHA1key 和 API 密钥）
<resources>
<!--
TODO: Before you run your application, you need a Google Maps API key.
To get one, follow this link, follow the directions and press "Create" at the end:
https://console.developers.google.com/flows/enableapi?apiid=maps_android_backend&keyType=CLIENT_SIDE_ANDROID&r=60:BF:DE:FE:3C:6F:DA:3B:56:09:E7:B7:BB:5F:FC:F8:AE:00:DC:0D%3Beu.sampa.happyPlaces.activities
You can also add your credentials to an existing key, using these values:
Package name:
eu.sampa.happyPlaces.activities
SHA-1 certificate fingerprint:
MY SHA1 KEY
Alternatively, follow the directions here:
https://developers.google.com/maps/documentation/android/start#get-key
Once you have your key (it starts with "AIza"), replace the "google_maps_key"
string in this file.
-->
<string name="google_maps_key" templateMergeStrategy="preserve" translatable="false">MY API KEY</string>
</resources>
现在我的 Activity 终于处理了所有必要的东西（很抱歉长度......但我已经用评论“// For the Places API", 必要时使用搜索功能)
AddHappyPlaceActivity.kt
package eu.sampa.happyPlaces.activities
import android.Manifest
import android.app.Activity
import android.app.DatePickerDialog
import android.content.ActivityNotFoundException
import android.content.Context
import android.content.ContextWrapper
import android.content.Intent
import android.content.pm.PackageManager
import android.graphics.Bitmap
import android.graphics.ImageDecoder
import android.net.Uri
import android.os.Build
import android.os.Bundle
import android.provider.MediaStore
import android.provider.Settings
import android.util.Log
import android.view.View
import android.widget.Toast
import androidx.annotation.RequiresApi
import androidx.appcompat.app.AlertDialog
import androidx.appcompat.app.AppCompatActivity
import androidx.core.content.ContextCompat
import com.google.android.libraries.places.api.Places
import com.google.android.libraries.places.api.model.Place
import com.google.android.libraries.places.widget.Autocomplete
import com.google.android.libraries.places.widget.model.AutocompleteActivityMode
import com.karumi.dexter.Dexter
import com.karumi.dexter.MultiplePermissionsReport
import com.karumi.dexter.PermissionToken
import com.karumi.dexter.listener.PermissionRequest
import com.karumi.dexter.listener.multi.MultiplePermissionsListener
import eu.sampa.happyPlaces.R
import eu.sampa.happyPlaces.database.DatabaseHandler
import eu.sampa.happyPlaces.models.HappyPlaceModel
import kotlinx.android.synthetic.main.activity_add_happy_place.*
import java.io.File
import java.io.FileOutputStream
import java.io.IOException
import java.io.OutputStream
import java.lang.Exception
import java.text.SimpleDateFormat
import java.util.*
class AddHappyPlaceActivity : AppCompatActivity(), View.OnClickListener {
// Creates a variable for GALLERY Selection which will be later used in the onActivityResult method.
companion object {
private const val GALLERY = 1
private const val CAMERA = 2
private const val IMAGE_DIRECTORY = "HappyPlacesImages"
private const val PLACE_AUTOCOMPLETE_REQUEST_CODE = 3
}
private var saveImageToInternalStorage : Uri? = null
private var mLatitude : Double = 0.0
private var mLongitude : Double = 0.0
// For the swipe feature
private var mHappyPlaceDetails : HappyPlaceModel? = null
// Creating the variables of Calender Instance and DatePickerDialog listener to use it for date selection
// A variable to get an instance calendar using the default time zone and locale.
private var cal = Calendar.getInstance()
/* A variable for DatePickerDialog OnDateSetListener.
* The listener used to indicate the user has finished selecting a date. It will be initialized later. */
private lateinit var dateSetListener : DatePickerDialog.OnDateSetListener
// Used to increment when someone clicks on the Add Photo button see below in onClick function
private var addButtonClicked = 0
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_add_happy_place)
// Adds the back button on the ActionBar
setSupportActionBar(toolbar_add_place)
supportActionBar?.setDisplayHomeAsUpEnabled(true)
toolbar_add_place.setNavigationOnClickListener {
onBackPressed()
}
// For the Places API
if(!Places.isInitialized()) {
Places.initialize(this@AddHappyPlaceActivity, resources.getString(R.string.google_maps_key))
}
if(intent.hasExtra(MainActivity.EXTRA_PLACE_DETAILS)) {
mHappyPlaceDetails = intent.getParcelableExtra(MainActivity.EXTRA_PLACE_DETAILS) as HappyPlaceModel
}
// Initialize the DatePicker and sets the selected date
// https://www.tutorialkart.com/kotlin-android/android-datepicker-kotlin-example/
dateSetListener = DatePickerDialog.OnDateSetListener{
_, year, month, dayOfMonth ->
cal.set(Calendar.YEAR, year)
cal.set(Calendar.MONTH, month)
cal.set(Calendar.DAY_OF_MONTH, dayOfMonth)
updateDateInView()
}
// Automatically sets the current date
updateDateInView()
// Uses functionality in the onClick function below
et_date.setOnClickListener(this)
tv_add_image.setOnClickListener(this)
btn_save.setOnClickListener(this)
et_location.setOnClickListener(this)
if(mHappyPlaceDetails != null) {
supportActionBar?.title = "Edit Happy PLace"
et_title.setText(mHappyPlaceDetails!!.title)
et_description.setText(mHappyPlaceDetails!!.description)
et_date.setText(mHappyPlaceDetails!!.date)
et_location.setText(mHappyPlaceDetails!!.location)
mLatitude = mHappyPlaceDetails!!.latitude
mLongitude = mHappyPlaceDetails!!.longitude
saveImageToInternalStorage = Uri.parse(mHappyPlaceDetails!!.image)
iv_place_image.setImageURI(saveImageToInternalStorage)
btn_save.text = "UPDATE"
}
}
// This is a override method after extending the onclick listener interface (gets created automatically)
override fun onClick(v: View?) {
when (v!!.id) {
R.id.et_date -> {
DatePickerDialog(this@AddHappyPlaceActivity, dateSetListener,
cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH)).show()
}
R.id.tv_add_image -> {
val pictureDialog = AlertDialog.Builder(this)
pictureDialog.setTitle("Select Action")
val pictureDialogItems = arrayOf("Select photo from gallery", "Capture photo from camera")
pictureDialog.setItems(pictureDialogItems) {
_, which ->
when(which) {
0 -> choosePhotoFromGallery()
1 -> takePhotoFromCamera()
}
}
pictureDialog.show()
/* Used to display the Dialog to get to the menu after the user
* denied access 2 or more times */
addButtonClicked += 1
if (addButtonClicked > 2) {
if (ContextCompat.checkSelfPermission(this@AddHappyPlaceActivity,
Manifest.permission.CAMERA)
!= PackageManager.PERMISSION_GRANTED) {
showRationalDialogForPermissions()
}
if (ContextCompat.checkSelfPermission(this@AddHappyPlaceActivity,
Manifest.permission.READ_EXTERNAL_STORAGE)
!= PackageManager.PERMISSION_GRANTED) {
showRationalDialogForPermissions()
}
if (ContextCompat.checkSelfPermission(this@AddHappyPlaceActivity,
Manifest.permission.WRITE_EXTERNAL_STORAGE)
!= PackageManager.PERMISSION_GRANTED) {
showRationalDialogForPermissions()
}
}
}
R.id.btn_save -> {
when {
et_title.text.isNullOrEmpty() -> {
Toast.makeText(this, "Please enter title", Toast.LENGTH_SHORT).show()
}
et_description.text.isNullOrEmpty() -> {
Toast.makeText(this, "Please enter description", Toast.LENGTH_SHORT)
.show()
}
et_location.text.isNullOrEmpty() -> {
Toast.makeText(this, "Please select location", Toast.LENGTH_SHORT)
.show()
}
saveImageToInternalStorage == null -> {
Toast.makeText(this, "Please add image", Toast.LENGTH_SHORT).show()
}
else -> {
// Assigning all the values to data model class.
val happyPlaceModel = HappyPlaceModel(
if(mHappyPlaceDetails == null) 0 else mHappyPlaceDetails!!.id,
et_title.text.toString(),
saveImageToInternalStorage.toString(),
et_description.text.toString(),
et_date.text.toString(),
et_location.text.toString(),
mLatitude,
mLongitude
)
// Here we initialize the database handler class.
val dbHandler = DatabaseHandler(this)
if (mHappyPlaceDetails == null) {
val addHappyPlace = dbHandler.addHappyPlace(happyPlaceModel)
if (addHappyPlace > 0) {
setResult(Activity.RESULT_OK)
finish() // Gets us back to MainActivity
}
} else{
val updateHappyPlace = dbHandler.updateHappyPlace(happyPlaceModel)
// greater than zero indicates that everything worked out
if (updateHappyPlace > 0) {
setResult(Activity.RESULT_OK)
finish() // Gets us back to MainActivity
}
}
}
}
}
// For the Places API
R.id.et_location -> {
try{
// This is the list of fields that need to be passed
val fields = listOf(Place.Field.ID, Place.Field.NAME, Place.Field.LAT_LNG, Place.Field.ADDRESS)
// Start the autocomplete intent with a unique request code.
val intent = Autocomplete.IntentBuilder(AutocompleteActivityMode.FULLSCREEN, fields).build(this@AddHappyPlaceActivity)
startActivityForResult(intent, PLACE_AUTOCOMPLETE_REQUEST_CODE)
}catch (e: Exception) {
e.printStackTrace()
Toast.makeText(this, "Couldnt load it", Toast.LENGTH_SHORT).show()}
}
}
}
// Method used for taking pictures with the Camera
private fun takePhotoFromCamera() {
// Asking for permissions using DEXTER Library
Dexter.withContext(this).withPermissions(
Manifest.permission.READ_EXTERNAL_STORAGE,
Manifest.permission.WRITE_EXTERNAL_STORAGE,
Manifest.permission.CAMERA
).withListener(object : MultiplePermissionsListener {
override fun onPermissionsChecked(report: MultiplePermissionsReport?) {
// Here after all the permission are granted launch the Camera to capture an image
val galleryIntent = Intent(MediaStore.ACTION_IMAGE_CAPTURE)
startActivityForResult(galleryIntent, CAMERA )
}
override fun onPermissionRationaleShouldBeShown(permissions: MutableList<PermissionRequest>?, token: PermissionToken?) {
token?.continuePermissionRequest()
}
}).onSameThread().check()
}
// Method used for image selection from GALLERY/PHOTOS
private fun choosePhotoFromGallery() {
// Asking for permissions using DEXTER Library
Dexter.withContext(this).withPermissions(
Manifest.permission.READ_EXTERNAL_STORAGE,
Manifest.permission.WRITE_EXTERNAL_STORAGE,
Manifest.permission.CAMERA
).withListener(object : MultiplePermissionsListener {
override fun onPermissionsChecked(report: MultiplePermissionsReport?) {
// Here after all the permission are granted, launch the gallery to select and image.
val galleryIntent = Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI)
startActivityForResult(galleryIntent,
GALLERY
)
}
override fun onPermissionRationaleShouldBeShown(permissions: MutableList<PermissionRequest>?, token: PermissionToken?) {
token?.continuePermissionRequest()
}
}).onSameThread().check()
}
// Message to be shown if user denies access and possibly send him to the settings
private fun showRationalDialogForPermissions() {
AlertDialog.Builder(this).setMessage("It looks like you have turned off " +
"permissions required for this feature").setPositiveButton("GO TO SETTINGS")
{ _, _ ->
try{
val intent = Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS)
val uri = Uri.fromParts("package", packageName, null)
intent.data = uri
startActivity(intent)
} catch (e: ActivityNotFoundException) {
e.printStackTrace()
}
}.setNegativeButton("Cancel") { dialog, _ ->
dialog.dismiss()
}.show()
}
// Handles the chosen Image from the startActivityResult from choosePhotoFromGallery and takePhotoFromCamera
@RequiresApi(Build.VERSION_CODES.P)
public override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
super.onActivityResult(requestCode, resultCode, data)
if(resultCode == Activity.RESULT_OK) {
if(requestCode == GALLERY) {
if(data != null) {
val contentURI = data.data
// For more info go to
try {
if(Build.VERSION.SDK_INT < 28) {
// Here this is used to get an bitmap from URI
val selectedImageBitmap = MediaStore.Images.Media.getBitmap(this.contentResolver, contentURI)
// Saving an image which is selected from GALLERY. And printed the path in logcat
saveImageToInternalStorage = saveImageToInternalStorage(selectedImageBitmap)
Log.e("Saved image: ", "Path :: $saveImageToInternalStorage")
iv_place_image!!.setImageBitmap(selectedImageBitmap) // Set the selected image from GALLERY to imageView
} else {
val selectedImageBitmapSource = contentURI?.let { ImageDecoder.createSource(this.contentResolver, it) }
val selectedImageBitmap = selectedImageBitmapSource?.let { ImageDecoder.decodeBitmap(it) }
// Saving an image which is selected from GALLERY. And printed the path in logcat
saveImageToInternalStorage = selectedImageBitmap?.let { saveImageToInternalStorage(it) }
Log.e("Saved image: ", "Path :: $saveImageToInternalStorage")
iv_place_image.setImageBitmap(selectedImageBitmap)
}
} catch (e: IOException) {
e.printStackTrace()
Toast.makeText(this@AddHappyPlaceActivity, "Failed to load the Image!", Toast.LENGTH_SHORT).show()
}
}
// Camera result will be received here
} else if(requestCode == CAMERA){
val thumbNail : Bitmap = data!!.extras!!.get("data") as Bitmap // Bitmap from camera
// Saving an image which is selected from CAMERA. And printed the path in logcat
saveImageToInternalStorage = saveImageToInternalStorage(thumbNail)
Log.e("Saved image: ", "Path :: $saveImageToInternalStorage")
iv_place_image.setImageBitmap(thumbNail) // Set to the imageView
// For the Places API
} else if(requestCode == PLACE_AUTOCOMPLETE_REQUEST_CODE) {
val place : Place = Autocomplete.getPlaceFromIntent(data!!)
et_location.setText(place.address)
mLatitude = place.latLng!!.latitude
mLongitude = place.latLng!!.longitude
}
}
}
// A function to update the selected date in the UI with selected format.
private fun updateDateInView() {
val myFormat = "dd.MM.yyyy"
val sdf = SimpleDateFormat(myFormat, Locale.getDefault())
et_date.setText(sdf.format(cal.time).toString())
}
/* https://android--code.blogspot.com/2018/04/android-kotlin-save-image-to-internal.html
Uri gives us the location back */
private fun saveImageToInternalStorage(bitmap: Bitmap):Uri {
// Get the context wrapper instance
val wrapper = ContextWrapper(applicationContext)
// This line returns a directory in the internal storage
var file = wrapper.getDir(IMAGE_DIRECTORY, Context.MODE_PRIVATE)
// First we give the location and then we generate a random Name for the Image
file = File(file, "${UUID.randomUUID()}.jpg")
//
try {
val stream : OutputStream = FileOutputStream(file)
bitmap.compress(Bitmap.CompressFormat.JPEG,100, stream)
stream.flush()
stream.close()
}catch (e: IOException) {
e.printStackTrace()
}
// Return the saved image uri
return Uri.parse(file.absolutePath)
}
}
Google Places AutoComplete 不一致结果背后的行为是您缺少 Billing Account。
1) 登录Google云平台
2) 前往结算菜单
3) 如果您以前有结算帐户，则可以将其分配给您的 Google 云项目。如果没有，请使用您的 credit/debit 卡创建一个新的结算帐户。
4)尝试使用结算帐户 API KEY，它将正常工作
检查此解决方案，我认为它可以完美运行并且您的结果将是一致的。
快乐编码
感谢观看。正如标题所暗示的那样，我在当前的 Kotlin 项目中面临着一个相当 "weird" 的问题。在我的应用程序中，用户可以单击一个按钮（或用作按钮的文本输入），然后会弹出一个新的意图，用户可以在其中键入位置。
这里有一个小片段：
R.id.et_location -> {
try{
// This is the list of fields that need to be passed
val fields = listOf(Place.Field.ID, Place.Field.NAME, Place.Field.LAT_LNG, Place.Field.ADDRESS)
// Start the autocomplete intent with a unique request code.
val intent = Autocomplete.IntentBuilder(AutocompleteActivityMode.FULLSCREEN, fields).build(this@AddHappyPlaceActivity)
startActivityForResult(intent, PLACE_AUTOCOMPLETE_REQUEST_CODE)
}catch (e: Exception) {
e.printStackTrace()
Toast.makeText(this, "Couldnt load it", Toast.LENGTH_SHORT).show()}
一切正常，所以 Window 弹出但是当我开始输入类似 "Dub" 的内容时（以迪拜为例）它显示了一些条目，但是如果我输入 1-又多了 2 个字符，它突然说 "Can't load search results"。有时搜索根本不起作用。我用谷歌搜索了这个问题，人们建议 API 键可能有问题，但如果键有问题，它首先不会工作，只是关闭 Intent（我试过).
我用 API 键尝试了一些东西。首先，我创建的第一个密钥有问题，它根本不起作用。我生成的第二个密钥部分起作用（我目前的情况）。第一个密钥仅限于我的 package/sha1。
如您所见，第二个键没有任何限制，但比第一个键效果更好。我现在不确定是我的 API 键导致了这个问题还是我的代码。下面我将分享相关的代码。
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="eu.sampa.happyPlaces">
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<!-- Several permissions -->
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.CAMERA" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<meta-data
android:name="com.google.android.geo.API_KEY"
android:value="@string/google_maps_key" />
<activity
android:name=".activities.HappyPlaceDetailActivity"
android:label="HAPPY PLACE DETAILS"
android:screenOrientation="portrait"
android:theme="@style/CustomNoActionBarTheme" />
<activity
android:name=".activities.AddHappyPlaceActivity"
android:label="ADD HAPPY PLACE"
android:screenOrientation="portrait"
android:theme="@style/CustomNoActionBarTheme" />
<activity android:name=".activities.MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
google_maps_api.xml（我在发帖前删除了我的 SHA1key 和 API 密钥）
<resources>
<!--
TODO: Before you run your application, you need a Google Maps API key.
To get one, follow this link, follow the directions and press "Create" at the end:
https://console.developers.google.com/flows/enableapi?apiid=maps_android_backend&keyType=CLIENT_SIDE_ANDROID&r=60:BF:DE:FE:3C:6F:DA:3B:56:09:E7:B7:BB:5F:FC:F8:AE:00:DC:0D%3Beu.sampa.happyPlaces.activities
You can also add your credentials to an existing key, using these values:
Package name:
eu.sampa.happyPlaces.activities
SHA-1 certificate fingerprint:
MY SHA1 KEY
Alternatively, follow the directions here:
https://developers.google.com/maps/documentation/android/start#get-key
Once you have your key (it starts with "AIza"), replace the "google_maps_key"
string in this file.
-->
<string name="google_maps_key" templateMergeStrategy="preserve" translatable="false">MY API KEY</string>
</resources>
现在我的 Activity 终于处理了所有必要的东西（很抱歉长度......但我已经用评论“// For the Places API", 必要时使用搜索功能)
AddHappyPlaceActivity.kt
package eu.sampa.happyPlaces.activities
import android.Manifest
import android.app.Activity
import android.app.DatePickerDialog
import android.content.ActivityNotFoundException
import android.content.Context
import android.content.ContextWrapper
import android.content.Intent
import android.content.pm.PackageManager
import android.graphics.Bitmap
import android.graphics.ImageDecoder
import android.net.Uri
import android.os.Build
import android.os.Bundle
import android.provider.MediaStore
import android.provider.Settings
import android.util.Log
import android.view.View
import android.widget.Toast
import androidx.annotation.RequiresApi
import androidx.appcompat.app.AlertDialog
import androidx.appcompat.app.AppCompatActivity
import androidx.core.content.ContextCompat
import com.google.android.libraries.places.api.Places
import com.google.android.libraries.places.api.model.Place
import com.google.android.libraries.places.widget.Autocomplete
import com.google.android.libraries.places.widget.model.AutocompleteActivityMode
import com.karumi.dexter.Dexter
import com.karumi.dexter.MultiplePermissionsReport
import com.karumi.dexter.PermissionToken
import com.karumi.dexter.listener.PermissionRequest
import com.karumi.dexter.listener.multi.MultiplePermissionsListener
import eu.sampa.happyPlaces.R
import eu.sampa.happyPlaces.database.DatabaseHandler
import eu.sampa.happyPlaces.models.HappyPlaceModel
import kotlinx.android.synthetic.main.activity_add_happy_place.*
import java.io.File
import java.io.FileOutputStream
import java.io.IOException
import java.io.OutputStream
import java.lang.Exception
import java.text.SimpleDateFormat
import java.util.*
class AddHappyPlaceActivity : AppCompatActivity(), View.OnClickListener {
// Creates a variable for GALLERY Selection which will be later used in the onActivityResult method.
companion object {
private const val GALLERY = 1
private const val CAMERA = 2
private const val IMAGE_DIRECTORY = "HappyPlacesImages"
private const val PLACE_AUTOCOMPLETE_REQUEST_CODE = 3
}
private var saveImageToInternalStorage : Uri? = null
private var mLatitude : Double = 0.0
private var mLongitude : Double = 0.0
// For the swipe feature
private var mHappyPlaceDetails : HappyPlaceModel? = null
// Creating the variables of Calender Instance and DatePickerDialog listener to use it for date selection
// A variable to get an instance calendar using the default time zone and locale.
private var cal = Calendar.getInstance()
/* A variable for DatePickerDialog OnDateSetListener.
* The listener used to indicate the user has finished selecting a date. It will be initialized later. */
private lateinit var dateSetListener : DatePickerDialog.OnDateSetListener
// Used to increment when someone clicks on the Add Photo button see below in onClick function
private var addButtonClicked = 0
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_add_happy_place)
// Adds the back button on the ActionBar
setSupportActionBar(toolbar_add_place)
supportActionBar?.setDisplayHomeAsUpEnabled(true)
toolbar_add_place.setNavigationOnClickListener {
onBackPressed()
}
// For the Places API
if(!Places.isInitialized()) {
Places.initialize(this@AddHappyPlaceActivity, resources.getString(R.string.google_maps_key))
}
if(intent.hasExtra(MainActivity.EXTRA_PLACE_DETAILS)) {
mHappyPlaceDetails = intent.getParcelableExtra(MainActivity.EXTRA_PLACE_DETAILS) as HappyPlaceModel
}
// Initialize the DatePicker and sets the selected date
// https://www.tutorialkart.com/kotlin-android/android-datepicker-kotlin-example/
dateSetListener = DatePickerDialog.OnDateSetListener{
_, year, month, dayOfMonth ->
cal.set(Calendar.YEAR, year)
cal.set(Calendar.MONTH, month)
cal.set(Calendar.DAY_OF_MONTH, dayOfMonth)
updateDateInView()
}
// Automatically sets the current date
updateDateInView()
// Uses functionality in the onClick function below
et_date.setOnClickListener(this)
tv_add_image.setOnClickListener(this)
btn_save.setOnClickListener(this)
et_location.setOnClickListener(this)
if(mHappyPlaceDetails != null) {
supportActionBar?.title = "Edit Happy PLace"
et_title.setText(mHappyPlaceDetails!!.title)
et_description.setText(mHappyPlaceDetails!!.description)
et_date.setText(mHappyPlaceDetails!!.date)
et_location.setText(mHappyPlaceDetails!!.location)
mLatitude = mHappyPlaceDetails!!.latitude
mLongitude = mHappyPlaceDetails!!.longitude
saveImageToInternalStorage = Uri.parse(mHappyPlaceDetails!!.image)
iv_place_image.setImageURI(saveImageToInternalStorage)
btn_save.text = "UPDATE"
}
}
// This is a override method after extending the onclick listener interface (gets created automatically)
override fun onClick(v: View?) {
when (v!!.id) {
R.id.et_date -> {
DatePickerDialog(this@AddHappyPlaceActivity, dateSetListener,
cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH)).show()
}
R.id.tv_add_image -> {
val pictureDialog = AlertDialog.Builder(this)
pictureDialog.setTitle("Select Action")
val pictureDialogItems = arrayOf("Select photo from gallery", "Capture photo from camera")
pictureDialog.setItems(pictureDialogItems) {
_, which ->
when(which) {
0 -> choosePhotoFromGallery()
1 -> takePhotoFromCamera()
}
}
pictureDialog.show()
/* Used to display the Dialog to get to the menu after the user
* denied access 2 or more times */
addButtonClicked += 1
if (addButtonClicked > 2) {
if (ContextCompat.checkSelfPermission(this@AddHappyPlaceActivity,
Manifest.permission.CAMERA)
!= PackageManager.PERMISSION_GRANTED) {
showRationalDialogForPermissions()
}
if (ContextCompat.checkSelfPermission(this@AddHappyPlaceActivity,
Manifest.permission.READ_EXTERNAL_STORAGE)
!= PackageManager.PERMISSION_GRANTED) {
showRationalDialogForPermissions()
}
if (ContextCompat.checkSelfPermission(this@AddHappyPlaceActivity,
Manifest.permission.WRITE_EXTERNAL_STORAGE)
!= PackageManager.PERMISSION_GRANTED) {
showRationalDialogForPermissions()
}
}
}
R.id.btn_save -> {
when {
et_title.text.isNullOrEmpty() -> {
Toast.makeText(this, "Please enter title", Toast.LENGTH_SHORT).show()
}
et_description.text.isNullOrEmpty() -> {
Toast.makeText(this, "Please enter description", Toast.LENGTH_SHORT)
.show()
}
et_location.text.isNullOrEmpty() -> {
Toast.makeText(this, "Please select location", Toast.LENGTH_SHORT)
.show()
}
saveImageToInternalStorage == null -> {
Toast.makeText(this, "Please add image", Toast.LENGTH_SHORT).show()
}
else -> {
// Assigning all the values to data model class.
val happyPlaceModel = HappyPlaceModel(
if(mHappyPlaceDetails == null) 0 else mHappyPlaceDetails!!.id,
et_title.text.toString(),
saveImageToInternalStorage.toString(),
et_description.text.toString(),
et_date.text.toString(),
et_location.text.toString(),
mLatitude,
mLongitude
)
// Here we initialize the database handler class.
val dbHandler = DatabaseHandler(this)
if (mHappyPlaceDetails == null) {
val addHappyPlace = dbHandler.addHappyPlace(happyPlaceModel)
if (addHappyPlace > 0) {
setResult(Activity.RESULT_OK)
finish() // Gets us back to MainActivity
}
} else{
val updateHappyPlace = dbHandler.updateHappyPlace(happyPlaceModel)
// greater than zero indicates that everything worked out
if (updateHappyPlace > 0) {
setResult(Activity.RESULT_OK)
finish() // Gets us back to MainActivity
}
}
}
}
}
// For the Places API
R.id.et_location -> {
try{
// This is the list of fields that need to be passed
val fields = listOf(Place.Field.ID, Place.Field.NAME, Place.Field.LAT_LNG, Place.Field.ADDRESS)
// Start the autocomplete intent with a unique request code.
val intent = Autocomplete.IntentBuilder(AutocompleteActivityMode.FULLSCREEN, fields).build(this@AddHappyPlaceActivity)
startActivityForResult(intent, PLACE_AUTOCOMPLETE_REQUEST_CODE)
}catch (e: Exception) {
e.printStackTrace()
Toast.makeText(this, "Couldnt load it", Toast.LENGTH_SHORT).show()}
}
}
}
// Method used for taking pictures with the Camera
private fun takePhotoFromCamera() {
// Asking for permissions using DEXTER Library
Dexter.withContext(this).withPermissions(
Manifest.permission.READ_EXTERNAL_STORAGE,
Manifest.permission.WRITE_EXTERNAL_STORAGE,
Manifest.permission.CAMERA
).withListener(object : MultiplePermissionsListener {
override fun onPermissionsChecked(report: MultiplePermissionsReport?) {
// Here after all the permission are granted launch the Camera to capture an image
val galleryIntent = Intent(MediaStore.ACTION_IMAGE_CAPTURE)
startActivityForResult(galleryIntent, CAMERA )
}
override fun onPermissionRationaleShouldBeShown(permissions: MutableList<PermissionRequest>?, token: PermissionToken?) {
token?.continuePermissionRequest()
}
}).onSameThread().check()
}
// Method used for image selection from GALLERY/PHOTOS
private fun choosePhotoFromGallery() {
// Asking for permissions using DEXTER Library
Dexter.withContext(this).withPermissions(
Manifest.permission.READ_EXTERNAL_STORAGE,
Manifest.permission.WRITE_EXTERNAL_STORAGE,
Manifest.permission.CAMERA
).withListener(object : MultiplePermissionsListener {
override fun onPermissionsChecked(report: MultiplePermissionsReport?) {
// Here after all the permission are granted, launch the gallery to select and image.
val galleryIntent = Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI)
startActivityForResult(galleryIntent,
GALLERY
)
}
override fun onPermissionRationaleShouldBeShown(permissions: MutableList<PermissionRequest>?, token: PermissionToken?) {
token?.continuePermissionRequest()
}
}).onSameThread().check()
}
// Message to be shown if user denies access and possibly send him to the settings
private fun showRationalDialogForPermissions() {
AlertDialog.Builder(this).setMessage("It looks like you have turned off " +
"permissions required for this feature").setPositiveButton("GO TO SETTINGS")
{ _, _ ->
try{
val intent = Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS)
val uri = Uri.fromParts("package", packageName, null)
intent.data = uri
startActivity(intent)
} catch (e: ActivityNotFoundException) {
e.printStackTrace()
}
}.setNegativeButton("Cancel") { dialog, _ ->
dialog.dismiss()
}.show()
}
// Handles the chosen Image from the startActivityResult from choosePhotoFromGallery and takePhotoFromCamera
@RequiresApi(Build.VERSION_CODES.P)
public override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
super.onActivityResult(requestCode, resultCode, data)
if(resultCode == Activity.RESULT_OK) {
if(requestCode == GALLERY) {
if(data != null) {
val contentURI = data.data
// For more info go to
try {
if(Build.VERSION.SDK_INT < 28) {
// Here this is used to get an bitmap from URI
val selectedImageBitmap = MediaStore.Images.Media.getBitmap(this.contentResolver, contentURI)
// Saving an image which is selected from GALLERY. And printed the path in logcat
saveImageToInternalStorage = saveImageToInternalStorage(selectedImageBitmap)
Log.e("Saved image: ", "Path :: $saveImageToInternalStorage")
iv_place_image!!.setImageBitmap(selectedImageBitmap) // Set the selected image from GALLERY to imageView
} else {
val selectedImageBitmapSource = contentURI?.let { ImageDecoder.createSource(this.contentResolver, it) }
val selectedImageBitmap = selectedImageBitmapSource?.let { ImageDecoder.decodeBitmap(it) }
// Saving an image which is selected from GALLERY. And printed the path in logcat
saveImageToInternalStorage = selectedImageBitmap?.let { saveImageToInternalStorage(it) }
Log.e("Saved image: ", "Path :: $saveImageToInternalStorage")
iv_place_image.setImageBitmap(selectedImageBitmap)
}
} catch (e: IOException) {
e.printStackTrace()
Toast.makeText(this@AddHappyPlaceActivity, "Failed to load the Image!", Toast.LENGTH_SHORT).show()
}
}
// Camera result will be received here
} else if(requestCode == CAMERA){
val thumbNail : Bitmap = data!!.extras!!.get("data") as Bitmap // Bitmap from camera
// Saving an image which is selected from CAMERA. And printed the path in logcat
saveImageToInternalStorage = saveImageToInternalStorage(thumbNail)
Log.e("Saved image: ", "Path :: $saveImageToInternalStorage")
iv_place_image.setImageBitmap(thumbNail) // Set to the imageView
// For the Places API
} else if(requestCode == PLACE_AUTOCOMPLETE_REQUEST_CODE) {
val place : Place = Autocomplete.getPlaceFromIntent(data!!)
et_location.setText(place.address)
mLatitude = place.latLng!!.latitude
mLongitude = place.latLng!!.longitude
}
}
}
// A function to update the selected date in the UI with selected format.
private fun updateDateInView() {
val myFormat = "dd.MM.yyyy"
val sdf = SimpleDateFormat(myFormat, Locale.getDefault())
et_date.setText(sdf.format(cal.time).toString())
}
/* https://android--code.blogspot.com/2018/04/android-kotlin-save-image-to-internal.html
Uri gives us the location back */
private fun saveImageToInternalStorage(bitmap: Bitmap):Uri {
// Get the context wrapper instance
val wrapper = ContextWrapper(applicationContext)
// This line returns a directory in the internal storage
var file = wrapper.getDir(IMAGE_DIRECTORY, Context.MODE_PRIVATE)
// First we give the location and then we generate a random Name for the Image
file = File(file, "${UUID.randomUUID()}.jpg")
//
try {
val stream : OutputStream = FileOutputStream(file)
bitmap.compress(Bitmap.CompressFormat.JPEG,100, stream)
stream.flush()
stream.close()
}catch (e: IOException) {
e.printStackTrace()
}
// Return the saved image uri
return Uri.parse(file.absolutePath)
}
}
Google Places AutoComplete 不一致结果背后的行为是您缺少 Billing Account。
1) 登录Google云平台
2) 前往结算菜单
3) 如果您以前有结算帐户，则可以将其分配给您的 Google 云项目。如果没有，请使用您的 credit/debit 卡创建一个新的结算帐户。
4)尝试使用结算帐户 API KEY，它将正常工作
检查此解决方案，我认为它可以完美运行并且您的结果将是一致的。
快乐编码