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This article mainly introduces "how to achieve a simple login interface for Android Studio". In daily operation, I believe many people have doubts about how to achieve a simple login interface for Android Studio. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the doubts about "how to achieve a simple login interface for Android Studio". Next, please follow the editor to study!

1. The first is the component layout in Activity, which is not enumerated one by one! Put two EditText and one Button on the ok, like the click effect of the button can be designed by yourself (what color is the default state, what color is pressed).

two。 Another is to give the control an id.

3. Then you need to write code in Mainactivity.java. You need to declare the control id, the binding control id and the click event of the login button (to determine whether it is a self-set password and whether it has reached a certain length). By the way, you also need to define the type name of the account password.

Package com.example.denlu; import androidx.appcompat.app.AppCompatActivity; import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.EditText;import android.widget.Toast; public class MainActivity extends AppCompatActivity {private EditText mEDit_password; private EditText mEDit_username; private Button mbtn_login; private String zhanhao; / / declare the variable private String mima stored in the account / / declare the variable @ Override protected void onCreate (Bundle savedInstanceState) {super.onCreate (savedInstanceState); setContentView (R.layout.activity_main); mEDit_username = findViewById (R.id.EDit_username); / / bind id mEDit_password = findViewById (R.id.EDit_password) of account Edit Text; / / bind id mbtn_login = findViewById (R.id.btn_login) of password Edit Text / / bind the id of button Button

4. All right, now all you have to do is write the click event of the button; before that, you need to create a new interface after the jump. The method of creating a new Activity has been sent before.

5. Then write the click event; then how to write the click event, first of all, must extract the account and password into the custom String variable, need to use .getText (). ToString () these two functions; since extracted, then the next step is easy, directly use a few if else if to write a few judgments.

Package com.example.denlu; import androidx.appcompat.app.AppCompatActivity; import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.EditText;import android.widget.Toast; public class MainActivity extends AppCompatActivity {private EditText mEDit_password; private EditText mEDit_username; private Button mbtn_login; private String zhanghao; / / declare the variable private String mima stored in the account / / declare the variable @ Override protected void onCreate (Bundle savedInstanceState) {super.onCreate (savedInstanceState); setContentView (R.layout.activity_main); mEDit_username = findViewById (R.id.EDit_username); / / bind the id mEDit_password of the account Edit Text = findViewById (R.id.EDit_password) / / bind id mbtn_login of password Edit Text = findViewById (R.id.btn_login); / / bind id mbtn_login.setOnClickListener of button Button (new View.OnClickListener () {@ Override public void onClick (View view) {zhanghao = mEDit_username.getText () .toString () / / take out the account and store it in the custom zhanhao variable mima = mEDit_password.getText () .toString () / / take the password out and store it in the custom mima variable if (zhanghao.length () 7) {/ / if to determine whether the length of the input account is between 3-7 digits, and if not, prompt Toast.makeText (MainActivity.this, "account length should be between 3-7 digits", Toast.LENGTH_SHORT) .show () } else if (mima.length () 6) {/ / if determines whether the length of the input account is 6 digits. If not, the pop-up window prompts Toast.makeText (MainActivity.this, "Please enter the 6-digit password", Toast.LENGTH_SHORT). Show () } if (zhanghao.equals ("abcdef") & & mima.equals ("123456") {/ / if the account password entered is "abcdef"123456", then the page jumps to Intent intent = new Intent (MainActivity.this,dengluMainActivity.class); startActivity (intent) } else {Toast.makeText (MainActivity.this, "account or password error", Toast.LENGTH_SHORT). Show ();}} at this point, the study on "how to implement an easy login interface for Android Studio" is over. I hope to solve everyone's doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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