电话拨号器

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <EditText
            android:id="@+id/edt1"
            android:inputType="phone"
            android:hint="请输入电话号码"
            android:layout_weight="8"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
        <Button
            android:id="@+id/btn1"
            android:text="打电话"
            android:onClick="onCall"
            android:layout_weight="2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
    </LinearLayout>
    <EditText
        android:id="@+id/edt2"
        android:inputType="textMultiLine"
        android:gravity="left|top"
        android:minLines="10"
        android:hint="请在此输入短信内容"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
    <Button
        android:layout_gravity="right"
        android:id="@+id/btn2"
        android:text="发短信"
        android:onClick="onSendMsg"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
</LinearLayout>

设计步骤

相关代码

package com.bluelesson.phoneandmessage;
import android.content.Intent;
import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.telecom.Call;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
    public void onCall(View view) {
        //获取电话号码
        EditText editText = findViewById(R.id.edt1);
        String phone = editText.getText().toString();
        //1）创建一个意图对象
        Intent intent = new Intent();
        //2）设置打电话动作
        intent.setAction(Intent.ACTION_CALL);
        //3）打包数据，方人员Intent
        Uri uri = Uri.parse("tel:"+phone);
        intent.setData(uri);
        //4）根据意图对象启动对应activity
        startActivity(intent);
    }
    public void onSendMsg(View view) {
    }
}

权限问题

短信发送器

相关代码

package com.bluelesson.phoneandmessage;
import android.content.Intent;
import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.telecom.Call;
import android.telephony.SmsManager;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
    public void onCall(View view) {
        //获取电话号码
        EditText editText = findViewById(R.id.edt1);
        String phone = editText.getText().toString();
        //1）创建一个意图对象
        Intent intent = new Intent();
        //2）设置打电话动作
        intent.setAction(Intent.ACTION_CALL);
        //3）打包数据，方人员Intent
        Uri uri = Uri.parse("tel:"+phone);
        intent.setData(uri);
        //4）根据意图对象启动对应activity
        startActivity(intent);
    }
    public void onSendMsg(View view) {
        //1.获取电话号码
        String phone = ((EditText)findViewById(R.id.edt1)).getText().toString();
        //2.获取短信内容
        String content = ((EditText)findViewById(R.id.edt2)).getText().toString();
        //3.获取SMS管理器对象
        SmsManager smsManager = SmsManager.getDefault();
        //4.拆分短信
        ArrayList<String> strings = smsManager.divideMessage(content);
        //5.发送短信
        smsManager.sendMultipartTextMessage(phone,null,strings,null,null);
    }
}

权限问题