Android使用ContentProvider怎么实现查看系统短信功能

这篇文章主要介绍“Android使用ContentProvider怎么实现查看系统短信功能”，在日常操作中，相信很多人在Android使用ContentProvider怎么实现查看系统短信功能问题上存在疑惑，小编查阅了各式资料，整理出简单好用的操作方法，希望对大家解答”Android使用ContentProvider怎么实现查看系统短信功能”的疑惑有所帮助！接下来，请跟着小编一起来学习吧！

activity_main.xml

<?xml version="1.0" encoding="utf-8"?> <LinearLayout 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:orientation="vertical"     tools:context=".MainActivity">     <TextView         android:id="@+id/tv_show"         android:layout_width="match_parent"         android:layout_height="0dp"         android:textSize="20dp"         android:layout_weight="9"></TextView>     <Button         android:id="@+id/bt_show"         android:layout_weight="1"         android:text="查看短信"         android:onClick="show"         android:layout_width="match_parent"         android:layout_height="0dp"></Button> </LinearLayout>

Sms.java

public class Sms {     private int id;     private String address;     private String body;     public Sms(int id, String address, String body) {         this.id = id;         this.address = address;         this.body = body;     }     public int getId() {         return id;     }     public void setId(int id) {         this.id = id;     }     public String getAddress() {         return address;     }     public void setAddress(String address) {         this.address = address;     }     public String getBody() {         return body;     }     public void setBody(String body) {         this.body = body;     } }

MainActivity.java

public class MainActivity extends AppCompatActivity {     private TextView tv_show;     private Button bt_show;     private List<Sms> list=new ArrayList<>();     private String text="";     @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);         tv_show=findViewById(R.id.tv_show);         bt_show=findViewById(R.id.bt_show);     }     public void show(View view) {         ActivityCompat.requestPermissions(MainActivity.this,new String[]{Manifest.permission.READ_SMS},1);         }         public void getSms(){              Uri uri= Uri.parse("content://sms/");             ContentResolver contentResolver=getContentResolver();             Cursor cursor = contentResolver.query(uri, new String[]{"_id", "address",                     "body"}, null, null, null);             if (cursor!=null&&cursor.getCount()>0){                 if (list!=null){                     list.clear();                 }                 text="";                 while (cursor.moveToNext()){                     int id=cursor.getInt(0);                     String name=cursor.getString(1);                     String body=cursor.getString(2);                     Sms sms=new Sms(id,name,body);                     list.add(sms);                 }                 for (int i=0;i<list.size();i++){                     text+="手机号码："+list.get(i).getAddress()+"\n";                     text+="短信内容："+list.get(i).getBody()+"\n\n";                 }                 tv_show.setText(text);             }         }     @Override     public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {         super.onRequestPermissionsResult(requestCode, permissions, grantResults);         if (requestCode==1){             for (int i=0;i<permissions.length;i++){                 if (grantResults[i]== PackageManager.PERMISSION_GRANTED){                     getSms();                 }else {                     Toast.makeText(MainActivity.this,"无权限",Toast.LENGTH_SHORT).show();                 }             }         }     } }

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