如何在android中以编程方式打开数字拨号盘？

Question

我想在Android上点击按钮，以编程方式显示数字拨号键盘（电话）。代码可用于直接拨号，但我只需要在单击按钮时显示拨号键盘。

Answer 1

Intent intent = new Intent(Intent.ACTION_DIAL); 
startActivity(intent); 

Answer 2

Intent intent = new Intent(Intent.ACTION_DIAL);
intent.setData(Uri.parse("tel:[phone]"));
startActivity(intent); 

为此，我们不需要在AndroidManifest.xml中添加任何权限

Answer 3

Intent intent =  new Intent(Intent.ACTION_CALL_BUTTON);
startActivity(intent);

它将显示拨号窗口检查here的信息

Answer 4

制作按钮或任何小部件示例：button1

  button1.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent callIntent = new Intent(Intent.ACTION_DIAL);
            callIntent.setData(Uri.parse("tel:"+button1.getText().toString().trim()));
            startActivity(callIntent);

        }
    });

在清单中添加权限：

 <uses-permission android:name="android.permission.CALL_PHONE" />

Answer 5

 public void openDialPad(String phoneNumber) {
        Intent intent = new Intent(Intent.ACTION_DIAL);
        intent.setData(Uri.parse(phoneNumber));
        startActivity(intent);
    }

Answer 6

Intent callIntent = new Intent(Intent.ACTION_DIAL);
callIntent.setData(Uri.parse("tel:" + phoneNumber));
 if (ActivityCompat.checkSelfPermission(getActivity(), 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(callIntent);

此外，您应该在清单中按如下方式注册自定义拨号屏幕：

<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
    android:name=".MyDialerApplication"
    android:label="@string/app_name" >

    <intent-filter android:priority="100" >
        <action android:name="android.intent.action.MAIN" />
         <action android:name="android.intent.action.DIAL" />
         <action android:name="android.intent.action.CALL_PRIVILEGED" />
        <category android:name="android.intent.category.DEFAULT" />
        <data android:scheme="tel" />

    </intent-filter>
</activity>

Answer 7

如果要在非活动类中使用它，则创建如下函数：

package bp;

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;

import session.MyApplication;

/**
 * Created by Atiar Talukdar on 7/11/2019.
 */
public class Utils {

    public static void openDialPad(Activity activity, String phoneNumber) {
        Intent intent = new Intent(Intent.ACTION_DIAL);
        intent.setData(Uri.parse("tel:" + phoneNumber));
        activity.startActivity(intent);
    }
}

然后从任何地方打电话：

Utils.openDialPad(getActivity(),data.getContactNo());

要么

Utils.openDialPad(this,data.getContactNo());