Question

我使用此（链接或代码）来存储用户的ID和密码 http://techblogon.com/android-login-registration-screen-with-sqlite-database-example/

问题是当用户登录其帐户时，我想在列表视图中永久存储列表视图项

private static int RESULT_LOAD_IMAGE = 1;
private String currentImageName = "ic_launcher";

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.create_ad_layout);

    Button saveButton = (Button) findViewById(R.id.buttonSaveAdd);
    saveButton.setOnClickListener(this);
    Button buttonaddimage = (Button) findViewById(R.id.buttonAddImage);
    buttonaddimage.setOnClickListener(this);
    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setMessage("Are you sure you want Create a new Add?")
    .setCancelable(false)
    .setPositiveButton("Yes", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int id) {


        }
    })
    .setNegativeButton("No", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int id) {
            dialog.cancel();
            Intent intent = new Intent(Create_adds_Activity.this, Button_mak.class);
            startActivity(intent);

        }
    });
    builder.show();
}



@Override
public void onClick(View v) {
    switch (v.getId()) {

    case R.id.buttonAddImage:

        Intent i = new Intent(
                Intent.ACTION_PICK,
                android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);

        startActivityForResult(i, RESULT_LOAD_IMAGE);


        break;
    case R.id.buttonSaveAdd:
        EditText editTextTitle = (EditText) findViewById(R.id.editTextTitle);
        EditText editTextDes = (EditText) findViewById(R.id.editTextDescription);
        EditText editTextOwner = (EditText) findViewById(R.id.editTextOwnerName);
        EditText editTextOwnerEmail = (EditText) findViewById(R.id.editTextOwnerEmail);
        EditText editTextPrice = (EditText) findViewById(R.id.editTextPrice);

        //populating data object from the values received 
        //from view
        String title = editTextTitle.getText().toString(); 
        String description = editTextDes.getText().toString();
        String ownerName = editTextOwner.getText().toString();
        String ownerEmail = editTextOwnerEmail.getText().toString();
        String pricce = editTextPrice.getText().toString();
        Advertisement  object = new Advertisement(title, description,
                ownerName, ownerEmail, currentImageName, Integer.parseInt(pricce), 100);
        Button_mak.ads.add(object);

        this.finish();
        break;



    }
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

    if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {
        Uri selectedImage = data.getData();
        String[] filePathColumn = { MediaStore.Images.Media.DATA };

        Cursor cursor = getContentResolver().query(selectedImage,
                filePathColumn, null, null, null);
        cursor.moveToFirst();

        int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
        String picturePath = cursor.getString(columnIndex);
        cursor.close();

        ImageView imageView10 = (ImageView) findViewById(R.id.creatae);
        imageView10.setImageBitmap(BitmapFactory.decodeFile(picturePath));
        currentImageName = ">>>"+picturePath;

    }

我使用数组适配器

    final Context context = this;
public static ArrayList<Advertisement> ads = new ArrayList<Advertisement>();

Answer 1

我会狡猾地建议使用SQLite来保存您的数据。在一开始它可能看起来有点复杂，但是当你习惯它时，它很容易。

这是一个方便的小教程：http://www.androidhive.info/2011/11/android-sqlite-database-tutorial/

如何在listview中永久存储数据

1 个答案: