Android RecyclerView适配器中发起电话呼叫的指南

import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;

import java.util.List;

public class MyCallAdapter extends RecyclerView.Adapter<MyCallAdapter.MyViewHolder> {

    private List<String> phoneNumbers; // 假设数据源是电话号码列表

    public MyCallAdapter(List<String> phoneNumbers) {
        this.phoneNumbers = phoneNumbers;
    }

    @NonNull
    @Override
    public MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.item_phone_number, parent, false);
        return new MyViewHolder(view);
    }

    @Override
    public void onBindViewHolder(@NonNull MyViewHolder holder, int position) {
        String currentPhoneNumber = phoneNumbers.get(position);
        holder.phoneNumberTextView.setText(currentPhoneNumber);

        holder.callButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // 从当前视图获取Context
                Context context = v.getContext(); 

                // 获取电话号码，这里直接使用数据源中的号码
                // 如果号码是从TextView中获取，则使用 holder.phoneNumberTextView.getText().toString()
                String phoneNo = currentPhoneNumber; 

                Intent intent = new Intent(Intent.ACTION_CALL, 
                                           Uri.parse("tel:" + phoneNo));

                // 启动意图
                context.startActivity(intent);
            }
        });
    }

    @Override
    public int getItemCount() {
        return phoneNumbers.size();
    }

    public static class MyViewHolder extends RecyclerView.ViewHolder {
        TextView phoneNumberTextView;
        Button callButton;

        public MyViewHolder(@NonNull View itemView) {
            super(itemView);
            phoneNumberTextView = itemView.findViewById(R.id.text_phone_number);
            callButton = itemView.findViewById(R.id.button_call);
        }
    }
}

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

import android.Manifest;
import android.content.pm.PackageManager;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;

public class MainActivity extends AppCompatActivity {

    private static final int PERMISSION_REQUEST_CALL_PHONE = 1;
    // ... 其他Activity代码

    public void makeCall(String phoneNumber) {
        if (ContextCompat.checkSelfPermission(this, Manifest.permission.CALL_PHONE)
                != PackageManager.PERMISSION_GRANTED) {
            // 权限尚未被授予，请求权限
            ActivityCompat.requestPermissions(this,
                    new String[]{Manifest.permission.CALL_PHONE},
                    PERMISSION_REQUEST_CALL_PHONE);
        } else {
            // 权限已经被授予，直接拨打电话
            Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:" + phoneNumber));
            startActivity(intent);
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode,
                                           @NonNull String[] permissions,
                                           @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == PERMISSION_REQUEST_CALL_PHONE) {
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                // 权限被授予，可以再次尝试拨打电话
                // 这里需要一种机制来重新触发拨打电话的逻辑，例如保存待拨号码
                Toast.makeText(this, "电话权限已授予，请再次点击拨号", Toast.LENGTH_SHORT).show();
            } else {
                // 权限被拒绝
                Toast.makeText(this, "电话权限被拒绝，无法拨打电话", Toast.LENGTH_SHORT).show();
            }
        }
    }
}

// 在MyCallAdapter中定义接口
public interface OnCallButtonClickListener {
    void onCallButtonClick(String phoneNumber);
}

// 修改MyCallAdapter构造函数
private OnCallButtonClickListener listener;

public MyCallAdapter(List<String> phoneNumbers, OnCallButtonClickListener listener) {
    this.phoneNumbers = phoneNumbers;
    this.listener = listener;
}

// 修改onBindViewHolder中的点击事件
holder.callButton.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        if (listener != null) {
            listener.onCallButtonClick(currentPhoneNumber);
        }
    }
});

// 在MainActivity中实现接口
public class MainActivity extends AppCompatActivity implements MyCallAdapter.OnCallButtonClickListener {
    // ...
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        // ...
        myAdapter = new MyCallAdapter(phoneNumbersList, this);
        recyclerView.setAdapter(myAdapter);
    }

    @Override
    public void onCallButtonClick(String phoneNumber) {
        makeCall(phoneNumber); // 调用Activity中的makeCall方法
    }
    // ...
}