您有3种方法可以做到这一点：共享首选项文件数据库
如果你想存储大量的数据而不是使用数据库，如果你想存储比如说10- 30个任务，你可以使用共享首选项，这是最快的方法。
在任何情况下，如果你熟悉写/阅读文件，这也将是很好的路径，但可能需要更多的工作。

可以创建一个DatabaseHandler类

package com.connection;

         import java.io.File;
         import java.io.FileOutputStream;
         import java.io.IOException;
         import java.io.InputStream;
         import java.io.OutputStream;
         import java.util.ArrayList;
         import android.content.ContentValues;
         import android.content.Context;
          import android.database.Cursor;
         import android.database.sqlite.SQLiteDatabase;
         import android.database.sqlite.SQLiteOpenHelper;
         import android.database.sqlite.SQLiteStatement;
            import android.util.Log;

        public class DatabaseHandler extends SQLiteOpenHelper {


// ====================== String Variables ======================
// The Android's default system path of your application database.
private static String DB_PATH = "/data/data/com.example/databases/"; // Package name
private static final String DATABASE_NAME = "test"; // Database Name

// ++++++++++++++++++++++ int Variables ++++++++++++++++++++++
private static final int DATABASE_VERSION = 1; // Database Version

// = = = = = = = = = = = Other Variables = = = = = = = = = = ==
private SQLiteDatabase myDataBase;
private final Context myContext;
SQLiteDatabase db;



public DatabaseHandler(Context context) {
    super(context, DATABASE_NAME, null, DATABASE_VERSION);
    this.myContext = context;


}
public void db_open()
{
    db = this.getWritableDatabase();
}
/**
 * Creates a empty database on the system and rewrites it with your own
 * database.
 * */
public void createDataBase() throws IOException {
    boolean dbExist = databaseExist();

    if (dbExist) {
        // do nothing - database already exist
    } else {
        // By calling this method and empty database will be created into
        // the default system path
        // of your application so we are gone a be able to overwrite that
        // database with our database.
        this.getReadableDatabase();
        try {
            copyDataBase(); // call method to copy database
            db = this.getWritableDatabase();
        } catch (IOException e) {
            throw new Error("Error copying database");
        }
    }
}

/**
 * Mrthod to check database is exist or not
 * @return
 */
public boolean databaseExist()
{
    File dbFile = new File(DB_PATH + DATABASE_NAME);
    return dbFile.exists();
}

/**
 * Copies your database from your local assets-folder to the just created
 * empty database in the system folder, from where it can be accessed and
 * handled. This is done by transfering bytestream.
 * */
private void copyDataBase() throws IOException {
    // Open your local db as the input stream
    InputStream myInput = myContext.getAssets().open(DATABASE_NAME);

    // Path to the just created empty db
    String outFileName = DB_PATH + DATABASE_NAME;

    // Open the empty db as the output stream
    OutputStream myOutput = new FileOutputStream(outFileName);

    // transfer bytes from the inputfile to the outputfile
    byte[] buffer = new byte[1024];
    int length;
    while ((length = myInput.read(buffer)) > 0) {
        myOutput.write(buffer, 0, length);
    }

    // Close the streams
    myOutput.flush();
    myOutput.close();
    myInput.close();

}

/**
 * Close Database
 */
@Override
public synchronized void close() {


    if (myDataBase != null)
        myDataBase.close();
    super.close();
}

public void DB_close()
{
    if(db!=null)
        db.close();
}

/**
 * Method to add data

 */
public  boolean addData(int vno,String content1,String content2){
    boolean status=false;

    ContentValues values = new ContentValues();
    String checkEntry = "select id from yourtable where id="+vno;// +"' AND userid="+userid;

    Cursor magazinecursor = db.rawQuery(checkEntry, null);
    if (magazinecursor.moveToFirst()) {

    } else {

        values.put("id", vno);
        values.put("content1", content1);
        values.put("content2", content2);



        long check = db.insert("yourtable", null, values);
        if (check > -1) {
            Log.i("inserstatus", "yourtable insert successfull");
            status = true;
        } else {
            Log.i("insertstatus", "yourtable insert unsuccessful");
        }
    }

    return status;
}



@Override
public void onCreate(SQLiteDatabase db) {

}

@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {

}

}
然后在要保存数据的活动中

DatabaseHandler myDbHelper;

            myDbHelper = new DatabaseHandler(MainActivity.this);
            myDbHelper.db_open();
            myDbHelper.addData(1,"sample",sample);

希望这对你或其他人有帮助。

我有一些类似的东西，我想存储少量的数据，但不想使用内容提供商或文件，所以我使用SharePreferences.（ps我在密钥的末尾使用随机数只是为了使其唯一，但用户后来从列表中选择了它，所以我知道的值然后）

SharedPreferences sp = this.getPreferences( Context.MODE_PRIVATE );
SharedPreferences.Editor editor = sp.edit();
Random rand = new Random();
int randomNum = rand.nextInt( 1000 );
editor.putString( "EQUATION_KEY_" + String.valueOf( randomNum ), textToSave);
editor.commit();