Android 讀取短信內容（模擬器）

讀取短信內容

讀取短信的內容就要知道短信放在哪裏，然後通過查詢語句把結果封裝到實體類的List中，再全部打印出來即可。
下面是具體的代碼：
activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/bg"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/tv_des"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="18dp"
        android:paddingLeft="20dp"
        android:text="讀取到的系統短信如下："
        android:textSize="20sp"
        android:visibility="invisible">

    </TextView>

    <TextView
        android:id="@+id/tv_sms"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/tv_des"
        android:layout_marginTop="0dp"
        android:lines="20"
        android:paddingLeft="20dp"
        android:paddingTop="10dp"
        android:textSize="16sp">

    </TextView>

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_marginBottom="28dp"
        android:layout_marginLeft="26dp"
        android:layout_marginStart="26dp"
        android:background="#149EDD"
        android:onClick="readSms"
        android:padding="5dp"
        android:text="查看短信"
        android:textSize="30sp">

    </Button>

</RelativeLayout>

MainActivity.java

package com.example.readsms;

import androidx.appcompat.app.AppCompatActivity;

import android.content.ContentResolver;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {

    private TextView tvSms;
    private TextView tvDes;
    private String text;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        tvSms = (TextView)findViewById(R.id.tv_sms) ;
        tvDes = (TextView)findViewById(R.id.tv_des) ;
    }

    public void readSms(View view){
        //查詢短信的uri
        Uri uri = Uri.parse("content://sms/");
        //獲取ContentResolver對象
        ContentResolver resolver = getContentResolver();
        Cursor cursor = resolver.query(uri,new String[]{
                "_id","address","type","body","date"},null,null,null);
        List<SmsInfo> smsInfos = new ArrayList<SmsInfo>();
        if (cursor != null && cursor.getCount()>0){
            tvDes.setVisibility(View.VISIBLE);
            while(cursor.moveToNext()){
                int _id = cursor.getInt(0);
                String address =cursor.getString(1);
                int type = cursor.getInt(2);
                String body = cursor.getString(3);
                long date = cursor.getLong(4);
                SmsInfo smsInfo = new SmsInfo(_id,address,type,body,date);
                smsInfos.add(smsInfo);
            }
            cursor.close();
        }
        for (int i=0;i<smsInfos.size();i++){
            text += "手機號碼" + smsInfos.get(i).getAddress()+"\n";
            text += "短信內容" + smsInfos.get(i).getBody()+"\n";
            tvSms.setText(text);
        }
    }
}

SmsInfo.java

package com.example.readsms;

public class SmsInfo {
    private int _id;                         //短信主鍵
    private String address;                  //發送地址
    private int type;                        //類型
    private String body;                     //短信內容
    private long date;                       //時間

    public SmsInfo(int _id, String address, int type, String body, long date) {
        this._id = _id;
        this.address = address;
        this.type = type;
        this.body = body;
        this.date = date;
    }

    public int get_id() {
        return _id;
    }

    public void set_id(int _id) {
        this._id = _id;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public int getType() {
        return type;
    }

    public void setType(int type) {
        this.type = type;
    }

    public String getBody() {
        return body;
    }

    public void setBody(String body) {
        this.body = body;
    }

    public long getDate() {
        return date;
    }

    public void setDate(long date) {
        this.date = date;
    }

    @Override
    public String toString() {
        return "SmsInfo{" +
                "_id=" + _id +
                ", address='" + address + '\'' +
                ", type=" + type +
                ", body='" + body + '\'' +
                ", date=" + date +
                '}';
    }
}

Androidmanifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.readsms">
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"></uses-permission>
    <uses-permission android:name="android.permission.READ_SMS"></uses-permission>
    <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>

運行截圖：


與短信內容一致。