有谁能告诉我如何解决“期待一个索引元素Kotlin”这个问题吗?...........................................................................
package com.example.imagetotext
import android.Manifest
import android.Manifest.permission.CAMERA
import android.Manifest.permission_group.CAMERA
import android.content.pm.PackageManager
import android.hardware.SensorPrivacyManager.Sensors.CAMERA
import android.media.MediaRecorder.VideoSource.CAMERA
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.Button
import android.widget.TextView
import androidx.core.app.ActivityCompat
import androidx.core.content.ContextCompat
class MainActivity : AppCompatActivity() {
private lateinit var btn1 : Button
private lateinit var btn2: Button
private lateinit var txtview : TextView
private val REQUEST_CAMERA_CODE : Int = 100
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
btn1=findViewById(R.id.buttoncapture);
btn2=findViewById(R.id.buttoncopy);
txtview=findViewById(R.id.textdata);
if(ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) !=PackageManager.PERMISSION_GRANTED)
{
ActivityCompat.requestPermissions(this, String[] {
Manifest.permission.CAMERA
}, REQUEST_CAMERA_CODE)
}
}
}
1条答案
按热度按时间mspsb9vt1#