Java 我如何在android studio中通过按钮拨打edittext中给出的电话号码？

我需要拨打我在

edittext

中指定的给定电话号码。但当我在输入号码后按下呼叫按钮时，没有响应

在

edittext

中输入号码后，只要按下呼叫按钮，我就需要直接从我的应用程序启动呼叫者窗口。朋友们，请帮帮我。同时让我知道我的代码有什么问题

非常感谢您在这件事上的时间和帮助

这是我的代码

MainActivity.java：

import android.Manifest;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.ActivityCompat;

import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;



public class MainActivity extends Activity {
    EditText number;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button mDialButton = (Button) findViewById(R.id.btn_dial);

        mDialButton.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                callNumber();
            }
        });
    }

    private String getPhoneNumber() {
        number = (EditText) findViewById(R.id.number);
        return number.getText().toString();

    }

    private void callNumber() {
        Intent call = new Intent(Intent.ACTION_CALL);
        call.setData(Uri.parse("tel:" + getPhoneNumber()));
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {
            // TODO: Consider calling
            //    ActivityCompat#requestPermissions
            // here to request the missing permissions, and then overriding
            //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
            //                                          int[] grantResults)
            // to handle the case where the user grants the permission. See the documentation
            // for ActivityCompat#requestPermissions for more details.
            return;
        }
        startActivity(call);
    }
}

AndroidManifest.xml：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="arun.com.phonecall">
    <uses-permission android:name="android.permission.CALL_PHONE"/>
    <uses-permission android:name="android.permission.READ_PHONE_STATE"/>

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

---

您尚未请求权限。如果您还没有权限，则需要请求权限，而不是直接返回

---

您可以使用我的库轻松处理运行时权限。检查

问题可能与权限有关，因为（从您的代码中）您没有正确地请求

操作调用的权限

阅读更多有关请求权限的信息

如果您不想拥有以下权限的业务，可以使用

操作拨号

：

Intent intent = new Intent(Intent.ACTION_DIAL, 
                       Uri.fromParts("tel", getPhoneNumber(), null));

---

首先检查Manifest.permission的运行时权限。打电话，然后您可以这样打电话

      Intent intent = new Intent(Intent.ACTION_DIAL);
      intent.setData(Uri.parse("tel:" + getPhoneNumber()));
      startActivity(intent); 

试试这个代码

public class MainActivity extends AppCompatActivity {

EditText number;
int REQUEST_PHONE_CALL = 1000;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Button mDialButton = (Button) findViewById(R.id.btn_dial);

    mDialButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            callNumber();
        }
    });
}

private String getPhoneNumber() {
    number = (EditText) findViewById(R.id.number);
    return number.getText().toString();

}

private void callNumber() {
    Intent call = new Intent(Intent.ACTION_CALL);
    call.setData(Uri.parse("tel:" + getPhoneNumber()));
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M
            && checkSelfPermission(
            Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {

        requestPermissions(
                new String[]{
                        Manifest.permission.CALL_PHONE},
                REQUEST_PHONE_CALL);
    }
    else
    {
        startActivity(call);
    }
}

@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    switch (requestCode) {
        case 1000:
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                Intent call = new Intent(Intent.ACTION_CALL);
                call.setData(Uri.parse("tel:" + getPhoneNumber()));
                startActivity(call);
            } else {
                Toast.makeText(MainActivity.this, "Permission is denied", Toast.LENGTH_SHORT).show();
            }
            break;

    }

}



}

---

@reshma dhaduk，请在你的回答中添加一些解释。它将帮助其他用户。@Da1如果Reshma的回答对您有帮助，请接受它。

public class MainActivity extends AppCompatActivity {

EditText number;
int REQUEST_PHONE_CALL = 1000;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Button mDialButton = (Button) findViewById(R.id.btn_dial);

    mDialButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            callNumber();
        }
    });
}

private String getPhoneNumber() {
    number = (EditText) findViewById(R.id.number);
    return number.getText().toString();

}

private void callNumber() {
    Intent call = new Intent(Intent.ACTION_CALL);
    call.setData(Uri.parse("tel:" + getPhoneNumber()));
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M
            && checkSelfPermission(
            Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {

        requestPermissions(
                new String[]{
                        Manifest.permission.CALL_PHONE},
                REQUEST_PHONE_CALL);
    }
    else
    {
        startActivity(call);
    }
}

@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    switch (requestCode) {
        case 1000:
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                Intent call = new Intent(Intent.ACTION_CALL);
                call.setData(Uri.parse("tel:" + getPhoneNumber()));
                startActivity(call);
            } else {
                Toast.makeText(MainActivity.this, "Permission is denied", Toast.LENGTH_SHORT).show();
            }
            break;

    }

}



}