安卓读取手机短信

上次接了一个项目，大致意思是一个页面，有六个输入（EditText），以及两个Button，一个button用于

读取短信，并处理读取的信息填充至六个EditText里面，另外一个按钮用于清除掉六个EditText里面的内容。

下面是运行效果图：

 首先，我们看manifest.xml文件，在这里我们需要添加两个关于读取短信的权限。

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_SMS"/>
当然只加这个权限还是会报错。大致的意思是说权限被拒绝。
后来我在oncreate（）方法里面加上了动态申请权限，问题解决。

if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP_MR1){
    //    requestPermission();
    requestPermissions(new String[]{
                    Manifest.permission.READ_EXTERNAL_STORAGE,Manifest.permission.READ_SMS },
            R.string.app_name);

    //this code will be executed on devices running ICS or later
}

ui部分不用看了，很简单的代码，六个TextView，六个EditText，两个button，一个ImageView就组成了这个页面。

MainActivity.java页面

package com.example.movielibrary;

import androidx.appcompat.app.AppCompatActivity;

import android.Manifest;
import android.content.ContentResolver;
import android.database.Cursor;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

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

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    private Button clearAll;
    private EditText ev_title;
    private EditText ev_year;
    private EditText ev_country;
    private EditText ev_genre;
    private EditText ev_cost;
    private EditText ev_keywords;
    private String text;
    private Button add;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP_MR1){
            //    requestPermission();
            requestPermissions(new String[]{
                            Manifest.permission.READ_EXTERNAL_STORAGE,Manifest.permission.READ_SMS },
                    R.string.app_name);

            //this code will be executed on devices running ICS or later
        }
        init();
    }

  private  void  init(){
      clearAll = findViewById(R.id.btn_clear);
      add = findViewById(R.id.btn_add);

      ev_title = findViewById(R.id.ev_title);
      ev_year = findViewById(R.id.ev_year);
      ev_country = findViewById(R.id.ev_country);
      ev_genre = findViewById(R.id.ev_genre);
      ev_cost = findViewById(R.id.ev_cost);
      ev_keywords = findViewById(R.id.ev_keywords);
      clearAll.setOnClickListener(this);
      add.setOnClickListener(this);
  }

    @Override
    public void onClick(View v) {
        switch (v.getId()){
            case R.id.btn_clear:
                clearAll();
                break;
            case R.id.btn_add:
                readSms();
                break;
        }
    }

    private void clearAll() {
         isEmpty(ev_title);
         isEmpty(ev_year);
         isEmpty(ev_country);
         isEmpty(ev_genre);
         isEmpty(ev_cost);
         isEmpty(ev_keywords);
    }

    private void isEmpty(EditText et){
        if (et.getText()!=null||et.getText().toString()!=""){
            et.setText("");
        }
    }


    public void readSms(){
        //查询短信的uri
        Uri uri = Uri.parse("content://sms/");
        //获取ContentResolver对象
        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){
            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 =smsInfos.get(0).getBody();
            //获取一条
            if (text==null){
                return;
            }
            if (text.contains(",")){
                String[] split = text.split(",");
                ev_title.setText(split[0]);
                ev_year.setText(split[1]);
                ev_country.setText(split[2]);
                ev_genre.setText(split[3]);
                ev_cost.setText(split[4]);
                ev_keywords.setText(split[5]);
            }else if (text.contains("，")){
                String[] split = text.split("，");
                ev_title.setText(split[0]);
                ev_year.setText(split[1]);
                ev_country.setText(split[2]);
                ev_genre.setText(split[3]);
                ev_cost.setText(split[4]);
                ev_keywords.setText(split[5]);
            }

        }
    }
}
这样就成能够成功运行了，点击add的Button，就能从短信中获取文字并处理填写到EditText中，点击Clear按钮内容将会被清空。这样，
我们需要的功能就这样实现了。