如何在Android中使用Phone Selector API？

电话选择器API用于检测电话中正在使用的电话号码。使用此功能，可以避免用户手动输入电话号码，并提示他们选择所需的号码。下面给出了一个示例图像，以使您对本文中要做的事情有一个了解。请注意，我们将使用Kotlin语言实施此项目。

分步实施

步骤1：创建一个新项目

要在Android Studio中创建新项目，请参阅如何在Android Studio中创建/启动新项目。请注意，选择Kotlin作为编程语言

第2步：将依赖项添加到build.gradle文件，然后单击“立即同步”

  implementation “com.google.android.gms:play-services-auth:19.0.0”

步骤3：使用activity_main.xml文件

转到activity_main.xml文件，并参考以下代码。为简单起见，我们仅使用TextView在选择后显示数字。以下是activity_main.xml文件的代码。

步骤4：在MainActivity.kt内编写以下代码

• 要检索电话号码提示，首先，通过创建一个HintRequest对象来配置提示选择器对话框。然后，将HintRequest对象传递给certificateClient.getHintPickerIntent ()以获得提示用户选择电话号码的意图。最后，使用startIntentSenderForResult()启动意图。
• onActivityResult()方法将帮助获取用户选择的号码，然后您可以编写下一个逻辑以继续您的应用。

科特林

import android.content.Intent
import android.content.IntentSender
import android.os.Bundle
import android.widget.Button
import android.widget.TextView
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity
import com.google.android.gms.auth.api.credentials.*
  
class MainActivity : AppCompatActivity() {
  
    lateinit var open_btn: Button
    lateinit var tv1: TextView
  
    companion object {
        var CREDENTIAL_PICKER_REQUEST = 1
    }
  
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
  
        open_btn = findViewById(R.id.btn_open)
        tv1 = findViewById(R.id.tv1)
  
        // set on click listener to button 
        // to open the phone selector dialog
        open_btn.setOnClickListener {
            phoneSelection()
        }
    }
  
    private fun phoneSelection() {
        // To retrieve the Phone Number hints, first, configure
        // the hint selector dialog by creating a HintRequest object.
        val hintRequest = HintRequest.Builder()
            .setPhoneNumberIdentifierSupported(true)
            .build()
  
        val options = CredentialsOptions.Builder()
            .forceEnableSaveDialog()
            .build()
  
        // Then, pass the HintRequest object to 
        // credentialsClient.getHintPickerIntent()
        // to get an intent to prompt the user to 
        // choose a phone number.
        val credentialsClient = Credentials.getClient(applicationContext, options)
        val intent = credentialsClient.getHintPickerIntent(hintRequest)
        try {
            startIntentSenderForResult(
                intent.intentSender,
                CREDENTIAL_PICKER_REQUEST, null, 0, 0, 0, Bundle()
            )
        } catch (e: IntentSender.SendIntentException) {
            e.printStackTrace()
        }
    }
  
    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        super.onActivityResult(requestCode, resultCode, data)
        if (requestCode == CREDENTIAL_PICKER_REQUEST && resultCode == RESULT_OK) {
              
            // get data from the dialog which is of type Credential
            val credential: Credential? = data?.getParcelableExtra(Credential.EXTRA_KEY)
              
            // set the received data t the text view
            credential?.apply {
                tv1.text = credential.id
            }
        } else if (requestCode == CREDENTIAL_PICKER_REQUEST && resultCode == CredentialsApi.ACTIVITY_RESULT_NO_HINTS_AVAILABLE) {
            Toast.makeText(this, "No phone numbers found", Toast.LENGTH_LONG).show();
        }
    }
}

输出：

Github链接： https://github.com/introidx/phone-Selecter

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