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EntryChoiceActivity.kt
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EntryChoiceActivity.kt
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/*
* Copyright 2020 Google LLC. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.mlkit.vision.demo
import android.Manifest
import android.content.Context
import android.content.Intent
import android.content.pm.PackageManager
import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import android.util.Log
import android.widget.TextView
import androidx.core.app.ActivityCompat
import androidx.core.content.ContextCompat
import com.google.mlkit.vision.demo.java.ChooserActivity
import java.util.ArrayList
class EntryChoiceActivity : AppCompatActivity(), ActivityCompat.OnRequestPermissionsResultCallback {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_vision_entry_choice)
findViewById<TextView>(R.id.java_entry_point).setOnClickListener {
val intent = Intent(this@EntryChoiceActivity, ChooserActivity::class.java)
startActivity(intent)
}
findViewById<TextView>(R.id.kotlin_entry_point).setOnClickListener {
val intent =
Intent(
this@EntryChoiceActivity,
com.google.mlkit.vision.demo.kotlin.ChooserActivity::class.java
)
startActivity(intent)
}
if (!allRuntimePermissionsGranted()) {
getRuntimePermissions()
}
}
private fun allRuntimePermissionsGranted(): Boolean {
for (permission in REQUIRED_RUNTIME_PERMISSIONS) {
permission?.let {
if (!isPermissionGranted(this, it)) {
return false
}
}
}
return true
}
private fun getRuntimePermissions() {
val permissionsToRequest = ArrayList<String>()
for (permission in REQUIRED_RUNTIME_PERMISSIONS) {
permission?.let {
if (!isPermissionGranted(this, it)) {
permissionsToRequest.add(permission)
}
}
}
if (permissionsToRequest.isNotEmpty()) {
ActivityCompat.requestPermissions(
this,
permissionsToRequest.toTypedArray(),
PERMISSION_REQUESTS
)
}
}
private fun isPermissionGranted(context: Context, permission: String): Boolean {
if (ContextCompat.checkSelfPermission(context, permission) == PackageManager.PERMISSION_GRANTED
) {
Log.i(TAG, "Permission granted: $permission")
return true
}
Log.i(TAG, "Permission NOT granted: $permission")
return false
}
companion object {
private const val TAG = "EntryChoiceActivity"
private const val PERMISSION_REQUESTS = 1
private val REQUIRED_RUNTIME_PERMISSIONS =
arrayOf(
Manifest.permission.CAMERA,
Manifest.permission.WRITE_EXTERNAL_STORAGE,
Manifest.permission.READ_EXTERNAL_STORAGE
)
}
}