Question

我正在进行注册和登录，我希望它能够在数据库中添加更多内容。如名字，姓氏，电子邮件，用户名和密码。这是我的register.java的代码：

public class Register extends Activity {

private Button bRR;

EditText etFN, etLN, etEmail, etUN, etPW, etRPW;
Spinner SMonth, SDay, SYaer;
TextView TVterms;
ArrayAdapter<CharSequence> adapter;
ProgressDialog PD;
String url = "http://10.0.0.12/accounts_java.php";
String fname , lname , uname , email , pass;



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

    //Button's go here
    bRR = (Button)findViewById(R.id.bRR);

    bRR = (Button)findViewById(R.id.bRR);
    bRR.setTypeface(Typeface.createFromAsset(getAssets(), "fonts/SinkinSans-300Light.otf"));
    //EditText's go here
    etFN = (EditText)findViewById(R.id.etFN);
    etLN = (EditText)findViewById(R.id.etLN);
    etEmail = (EditText)findViewById(R.id.etEmail);
    etUN = (EditText)findViewById(R.id.etUN);
    etPW = (EditText)findViewById(R.id.etPW);
    etRPW = (EditText)findViewById(R.id.etRPW);
    //Spinner's go here
    SMonth = (Spinner)findViewById(R.id.SMonth);
    SDay = (Spinner)findViewById(R.id.SDay);
    SYaer = (Spinner)findViewById(R.id.SYear);

    SMonth = (Spinner)findViewById(R.id.SMonth);
    adapter = ArrayAdapter.createFromResource(this, R.array.Month, R.layout.support_simple_spinner_dropdown_item);
    adapter.setDropDownViewResource(R.layout.support_simple_spinner_dropdown_item);
    SMonth.setAdapter(adapter);

    SDay = (Spinner)findViewById(R.id.SDay);
    adapter = ArrayAdapter.createFromResource(this, R.array.Day, R.layout.support_simple_spinner_dropdown_item);
    adapter.setDropDownViewResource(R.layout.support_simple_spinner_dropdown_item);
    SDay.setAdapter(adapter);

    SYaer = (Spinner)findViewById(R.id.SYear);
    adapter = ArrayAdapter.createFromResource(this, R.array.Year, R.layout.support_simple_spinner_dropdown_item);
    adapter.setDropDownViewResource(R.layout.support_simple_spinner_dropdown_item);
    SYaer.setAdapter(adapter);
    //TextView's go here
    TVterms = (TextView)findViewById(R.id.TVterms);
    //oonClick's go here
    //pd'// STOPSHIP: 12/18/2015
    PD = new ProgressDialog(this);
    PD.setMessage("Creating your account...");
    PD.setCancelable(false);
}



public void onSignUpClick(View v)
{
    if (v.getId() == R.id.bRR);
    {
        EditText fname = (EditText)findViewById(R.id.etFN);
        EditText lname = (EditText)findViewById(R.id.etLN);
        EditText uname = (EditText)findViewById(R.id.etUN);
        EditText email = (EditText)findViewById(R.id.etEmail);
        EditText pass1 = (EditText)findViewById(R.id.etPW);
        EditText pass2 = (EditText)findViewById(R.id.etRPW);

        String fnamestr = fname.getText().toString();
        String lnamestr = lname.getText().toString();
        String unamestr = uname.getText().toString();
        String emailstr = email.getText().toString();
        String pass1str = pass1.getText().toString();
        String pass2str = pass2.getText().toString();

        if (!pass1str.equals(pass2str))
        {
            //popup msg
            Toast pass = Toast.makeText(Register.this, "Password do not match!", Toast.LENGTH_SHORT);
            pass.show();

        }

    }
}

private void initTypeface() {

    Typeface myTypeface = Typeface.createFromAsset(getAssets(), "fonts/SinkinSans-300Light.otf");
    TextView tittleText=(TextView) findViewById(R.id.textView5);
    tittleText.setTypeface(myTypeface);

    myTypeface = Typeface.createFromAsset(getAssets(), "fonts/SinkinSans-300Light.otf");
    tittleText = (TextView) findViewById(R.id.textView7);
    tittleText.setTypeface(myTypeface);

    myTypeface = Typeface.createFromAsset(getAssets(), "fonts/SinkinSans-300Light.otf");
    tittleText = (TextView) findViewById(R.id.textView8);
    tittleText.setTypeface(myTypeface);

    myTypeface = Typeface.createFromAsset(getAssets(), "fonts/SinkinSans-300Light.otf");
    tittleText = (TextView) findViewById(R.id.textView9);
    tittleText.setTypeface(myTypeface);

    myTypeface = Typeface.createFromAsset(getAssets(), "fonts/SinkinSans-300Light.otf");
    tittleText = (TextView) findViewById(R.id.textView10);
    tittleText.setTypeface(myTypeface);

    myTypeface = Typeface.createFromAsset(getAssets(), "fonts/SinkinSans-300Light.otf");
    tittleText = (TextView) findViewById(R.id.textView11);
    tittleText.setTypeface(myTypeface);

    myTypeface = Typeface.createFromAsset(getAssets(), "fonts/SinkinSans-300Light.otf");
    tittleText = (TextView) findViewById(R.id.textView12);
    tittleText.setTypeface(myTypeface);

    myTypeface = Typeface.createFromAsset(getAssets(), "fonts/SinkinSans-300Light.otf");
    tittleText = (TextView) findViewById(R.id.textView13);
    tittleText.setTypeface(myTypeface);

    myTypeface = Typeface.createFromAsset(getAssets(), "fonts/SinkinSans-300Light.otf");
    tittleText = (TextView) findViewById(R.id.TVterms);
    tittleText.setTypeface(myTypeface);
}

public void insert(View view){

    PD.show();
    fname = etFN.getText().toString();
    lname = etLN.getText().toString();
    uname = etUN.getText().toString();
    email = etEmail.getText().toString();
    pass = etPW.getText().toString();

    StringRequest postRequest = new StringRequest(Request.Method.POST, url,
            new Response.Listener<String>() {
                @Override
                public void onResponse(String response) {
                    PD.dismiss();
                    etFN.setText("");
                    etLN.setText("");
                    etUN.setText("");
                    etEmail.setText("");
                    etPW.setText("");
                    Toast.makeText(getApplicationContext(),
                            "Your account is created!",
                            Toast.LENGTH_SHORT).show();
                }
            }, new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {
            PD.dismiss();
            Toast.makeText(getApplicationContext(),
                    "Error creating your account!",
                    Toast.LENGTH_SHORT).show();
        }
    }){
        @Override
        protected Map<String,String> getParams() {
            Map<String,String> params = new HashMap<String,String>();
            params.put("fname",fname);

            return params;
        }
    };
    MyApplication.getInstance().addToReqQueue(postRequest);
}

}

我想在MySQL中添加5个值而不仅仅是一个。

Answer 1

        @Override
        protected Map<String,String> getParams() {
            Map<String,String> params = new HashMap<String,String>();
            params.put("fname",fname);
            params.put("lname",lname );
            ...
            return params;
        }

Answer 2

我将在下面留下我的旧答案，因为我仍然认为ContentProvider可能是一个很好的机制，因为它逻辑上隔离了网络传输/等的同步机制。

我一开始并没有意识到你正在使用Volley，我忘记它甚至存在，因为我只是教授手册，而且从不使用'方便方法'等。

....因为如果是这样，它在Android设备上不是MySQL，Android使用SQLite3作为其内部数据库。

如果要在数据库中插入多个内容，则需要在.beginTransaction（）和.endTransaction（）之间反复调用insert，这样数据库就会“丢弃”任何已完成的插入如果任何单个插入失败。

现在您可能想知道如何将多组数据传递给方法来执行插入操作。为此你有2个选择。你可以传递一个Contentvalues数组，或者你可以传递一个自定义POJO的数组（或arraylist / etc之类的集合）（我的建议是让那个POJO类有一个'getContentValues（）方法来重新定义内容值来自每个POJO的对象。）

但在任何一种情况下，您都必须开始事务，遍历所有Contentvalues，然后结束转换。

Android JAVADOC for SQLit SQLiteDatabase.insert(String, String, Contentvalues)

我个人从未写过一个我不会立即用Android中的ContentProvider包装的数据库。 Content Provider为我提供了更好的关注/界面分离。（然后很容易添加syncAdapters，帐户和所有额外的“糖”，以使数据存储为您工作奇迹。但当然这取决于您的目标应用程序，我写的几乎按定义所有联网。）

如何在“地图”中添加两个以上的字符串？我想加5

2 个答案: