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This article mainly introduces how to set up the function of remembering login account password in Android development, which has a certain reference value, and interested friends can refer to it. I hope you can learn a lot after reading this article.

First, page building

Second, code implementation

Package com.hiscene.test;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.text.TextUtils;import android.view.View;import android.widget.CheckBox;import android.widget.EditText;import android.widget.Toast;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.FileReader;import java.io.OutputStream;import java.io.OutputStreamWriter;public class MainActivity extends AppCompatActivity {EditText et_userName EditText et_password; CheckBox checkBox; @ Override protected void onCreate (Bundle savedInstanceState) {super.onCreate (savedInstanceState); setContentView (R.layout.login_layout); et_userName = findViewById (R.id.et_UserName); et_password = findViewById (R.id.et_Password); checkBox = findViewById (R.id.checkBox); LoadInfo ();} private void LoadInfo () {File file=new File ("data/data/com.hiscene.test/usre.txt") If (! file.exists ()) return; try {FileReader reader = new FileReader (file); BufferedReader br=new BufferedReader (reader); String text=br.readLine (); String [] arr=text.split ("#"); et_userName.setText (arr [0]); et_password.setText (arr [1]); checkBox.setChecked (true); br.close ();} catch (Exception e) {e.printStackTrace () }} public void Login (View view) {String userName=et_userName.getText () .toString () .trim (); String password= et_password.getText () .toString () .trim (); if (TextUtils.isEmpty (userName) | | TextUtils.isEmpty (password)) {Toast.makeText (MainActivity.this, "username or password cannot be empty!" , Toast.LENGTH_SHORT) .show (); return;} if (checkBox.isChecked ()) {File file=new File ("data/data/com.hiscene.test/usre.txt"); try {OutputStream out=new FileOutputStream (file); OutputStreamWriter osw=new OutputStreamWriter (out, "UTF-8"); BufferedWriter writer=new BufferedWriter (osw); writer.write (userName+ "#" + password); writer.flush () Writer.close ();} catch (Exception e) {e.printStackTrace ();} Thank you for reading this article carefully. I hope the article "how to set up the function of remembering login account password in Android development" shared by the editor will be helpful to you. At the same time, I hope you will support us and pay attention to the industry information channel. More related knowledge is waiting for you to learn!

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