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geeksville 2020-01-22 21:46:41 -08:00
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commit 3551eedb8a
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app/src/main/java/com/geeksville/meshutil/MainActivity.kt
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package com.geeksville.meshutil
import android.Manifest
import android.bluetooth.*
import android.content.Context
import android.content.Intent
import android.content.pm.PackageManager
import android.os.Bundle
import android.os.Handler
import android.util.Log
import com.google.android.material.snackbar.Snackbar
import androidx.appcompat.app.AppCompatActivity
import android.view.Menu
import android.view.MenuItem
import android.widget.Toast
import androidx.compose.Composable
import androidx.core.app.ActivityCompat
import androidx.core.content.ContextCompat
import androidx.ui.core.Text
import androidx.ui.core.dp
import androidx.ui.core.setContent
import androidx.ui.layout.Column
import androidx.ui.layout.Spacing
import androidx.ui.material.Button
import androidx.ui.material.MaterialTheme
import androidx.ui.tooling.preview.Preview
import com.geeksville.android.Logging
class MainActivity : AppCompatActivity(), Logging {
companion object {
const val REQUEST_ENABLE_BT = 10
const val DID_REQUEST_PERM = 11
}
private val bluetoothAdapter: BluetoothAdapter? by lazy(LazyThreadSafetyMode.NONE) {
val bluetoothManager = getSystemService(Context.BLUETOOTH_SERVICE) as BluetoothManager
bluetoothManager.adapter
}
fun requestPermission() {
debug("Checking permissions")
val perms = arrayOf(
Manifest.permission.ACCESS_FINE_LOCATION,
Manifest.permission.ACCESS_BACKGROUND_LOCATION,
Manifest.permission.BLUETOOTH,
Manifest.permission.BLUETOOTH_ADMIN,
Manifest.permission.WAKE_LOCK
)
val missingPerms = perms.filter {
ContextCompat.checkSelfPermission(
this,
it
) != PackageManager.PERMISSION_GRANTED
}
if (missingPerms.isNotEmpty()) {
missingPerms.forEach {
// Permission is not granted
// Should we show an explanation?
if (ActivityCompat.shouldShowRequestPermissionRationale(this, it)) {
// FIXME
// Show an explanation to the user *asynchronously* -- don't block
// this thread waiting for the user's response! After the user
// sees the explanation, try again to request the permission.
}
}
// Ask for all the missing perms
ActivityCompat.requestPermissions(this, missingPerms.toTypedArray(), DID_REQUEST_PERM)
// DID_REQUEST_PERM is an
// app-defined int constant. The callback method gets the
// result of the request.
} else {
// Permission has already been granted
}
}
@Preview
@Composable
fun composeView() {
MaterialTheme {
Column {
Text(text = "MeshUtil Ugly UI", modifier = Spacing(8.dp))
Button(text = "Start scan",
onClick = {
if (bluetoothAdapter != null) {
SoftwareUpdateService.enqueueWork(
this@MainActivity,
SoftwareUpdateService.scanDevicesIntent
)
}
})
}
}
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContent {
composeView()
}
// Ensures Bluetooth is available on the device and it is enabled. If not,
// displays a dialog requesting user permission to enable Bluetooth.
if (bluetoothAdapter != null) {
bluetoothAdapter!!.takeIf { !it.isEnabled }?.apply {
val enableBtIntent = Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE)
startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT)
}
} else {
Toast.makeText(this, "Error - this app requires bluetooth", Toast.LENGTH_LONG).show()
}
requestPermission()
}
override fun onCreateOptionsMenu(menu: Menu): Boolean {
// Inflate the menu; this adds items to the action bar if it is present.
menuInflater.inflate(R.menu.menu_main, menu)
return true
}
override fun onOptionsItemSelected(item: MenuItem): Boolean {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
return when (item.itemId) {
R.id.action_settings -> true
else -> super.onOptionsItemSelected(item)
}
}
}