Android 如何使用 Kotlin 授予来自小部件的调用权限

如何解决Android 如何使用 Kotlin 授予来自小部件的调用权限

我有一个简单的应用程序，需要根据单击按钮来拨打 4 个号码，这就是应用程序。我认为这已经解决了。

package com.blockd

import android.Manifest
import android.content.Intent
import android.content.pm.PackageManager
import android.net.Uri
import android.os.Bundle
import android.view.View
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity
import androidx.core.app.ActivityCompat
import androidx.core.content.ContextCompat
import java.lang.Exception


class MainActivity : AppCompatActivity()
{
    override fun onCreate(savedInstanceState: Bundle?)
    {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
    }

    //Kapija 1 button click
    fun onKapija1Click(view: View)
    {
        makeACall(PhoneNumbers.kapija1Number)
    }

    //Kapija 2 button click
    fun onKapija2Click(view: View)
    {
        makeACall(PhoneNumbers.kapija2Number)
    }

    //Garaza 1 button click
    fun onGaraza1Click(view: View)
    {
        makeACall(PhoneNumbers.garaza1Number)
    }

    //Garaza 2 button click
    fun onGaraza2Click(view: View)
    {
        makeACall(PhoneNumbers.garaza2Number)
    }

    private fun makeACall(number: String)
    {
        try
        {
            val callIntent = Intent(Intent.ACTION_CALL)
            callIntent.data = Uri.parse(number)

            if (ContextCompat.checkSelfPermission(this,Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED)
            {
                ActivityCompat.requestPermissions(this,arrayOf(Manifest.permission.CALL_PHONE),42)
            }

            startActivity(callIntent)
        }
        catch (ex: Exception)
        {
            Toast.makeText(this,"Tokom poziva doslo je do nepredvidjene greške!",Toast.LENGTH_LONG).show()
        }
    }
}

现在，问题是，他们想要一个具有相同功能的小部件。我不确定，这样做是否正确，但是当我需要授予呼叫权限时遇到了问题。我正在尝试这样的事情：

package com.blockd

import android.Manifest
import android.appwidget.AppWidgetManager
import android.appwidget.AppWidgetProvider
import android.content.Context
import android.content.Intent
import android.content.pm.PackageManager
import android.net.Uri
import android.view.View
import android.widget.RemoteViews
import android.widget.Toast
import androidx.core.content.ContextCompat
import androidx.core.content.ContextCompat.startActivity
import java.lang.Exception

/**
 * Implementation of App Widget functionality.
 */
class Widget : AppWidgetProvider()
{
    private lateinit var _context: Context

    override fun onUpdate(context: Context,appWidgetManager: AppWidgetManager,appWidgetIds: IntArray)
    {
        _context = context

        // There may be multiple widgets active,so update all of them
        for (appWidgetId in appWidgetIds)
        {
            updateAppWidget(context,appWidgetManager,appWidgetId)
        }
    }

    override fun onEnabled(context: Context)
    {
        // Enter relevant functionality for when the first widget is created
    }

    override fun onDisabled(context: Context)
    {
        // Enter relevant functionality for when the last widget is disabled
    }

    //Kapija 1 button click
    fun onKapija1Click(view: View)
    {
        makeACall(PhoneNumbers.kapija1Number)
    }

    //Kapija 2 button click
    fun onKapija2Click(view: View)
    {
        makeACall(PhoneNumbers.kapija2Number)
    }

    //Garaza 1 button click
    fun onGaraza1Click(view: View)
    {
        makeACall(PhoneNumbers.garaza1Number)
    }

    //Garaza 2 button click
    fun onGaraza2Click(view: View)
    {
        makeACall(PhoneNumbers.garaza2Number)
    }

    private fun makeACall(number: String)
    {
        try
        {
            val callIntent = Intent(Intent.ACTION_CALL)
            callIntent.data = Uri.parse(number)

            if (ContextCompat.checkSelfPermission(_context,Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED)
            {
                //ActivityCompat.requestPermissions(_context,42)
            }

            startActivity(_context,callIntent,null)
        }
        catch (ex: Exception)
        {
            Toast.makeText(_context,Toast.LENGTH_LONG)
                 .show()
        }
    }
}

internal fun updateAppWidget(context: Context,appWidgetId: Int)
{
    val widgetText = context.getString(R.string.appwidget_text)
    // Construct the RemoteViews object
    val views = RemoteViews(context.packageName,R.layout.widget)


    // Instruct the widget manager to update the widget
    appWidgetManager.updateAppWidget(appWidgetId,views)
}

我的另一个问题是小部件没有显示在主屏幕上。 如果需要，我可以提供更多代码。

谢谢