学习记录（3.30）
学习时长：7h
代码行数：约300行
今天上午进行了网络课和工程数学课的学习，工程数学课依然是云里雾里，好多概念怎么学呢？哭
下午体育课篮球赛把对面组干烂了，既挥洒了汗水，又获得了胜利的喜悦，于是乎一高兴就把剩下的app给写完了。
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="@+id/zhucet"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="注册"
android:textSize="50dp" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="选择您的性别"/>
<RadioGroup
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<RadioButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="男" />
<RadioButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="女"/>
</RadioGroup>
<EditText
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/zc_id"
android:hint="请输入用户名"
android:inputType="text"/>
<EditText
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/zc_phone"
android:hint="请输入手机号"
android:inputType="text"/>
<EditText
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/zc_password"
android:hint="请输入密码"
android:inputType="textPassword"/>
<EditText
android:layout_width="match_parent"
android:layout_height="match_parent"
android:hint="确认密码"
android:inputType="textPassword"/>
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:gravity="center">
<Button
android:id="@+id/iv_back"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="返回"
android:textSize="40dp" />
<Button
android:id="@+id/zhuceb"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="注册"
android:textSize="40dp" />
</LinearLayout>
</LinearLayout>
package com.example.myapplication1;
import androidx.appcompat.app.AppCompatActivity;
import android.annotation.SuppressLint;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;
public class Zhuce extends AppCompatActivity implements View.OnClickListener {
private EditText zc_phone;
private EditText zc_id;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_zhuce);
zc_id = findViewById(R.id.zc_id);
zc_phone = findViewById(R.id.zc_phone);
EditText password = findViewById(R.id.zc_password);
zc_phone.setOnFocusChangeListener(this::onFocusChange);
password.setOnFocusChangeListener(this::onFocusChange);
findViewById(R.id.iv_back).setOnClickListener(this::onClick);
findViewById(R.id.zhuceb).setOnClickListener(this::onClick);
}
public void onFocusChange(View v,boolean b)
{
if(b){
String phone=zc_phone.getText().toString();
String id=zc_id.getText().toString();
if(TextUtils.isEmpty(phone) || phone.length()<11) {
zc_phone.requestFocus();
Toast.makeText(this, "请输入11位手机号", Toast.LENGTH_SHORT).show();
}
if(TextUtils.isEmpty(id)) {
zc_id.requestFocus();
Toast.makeText(this, "用户名不能为空", Toast.LENGTH_SHORT).show();
}
}
}
public void onClick(View view) {
if(view.getId() == R.id.iv_back || view.getId() == R.id.zhuceb)
finish();
}
}
package com.example.myapplication1;
import static com.example.myapplication1.R.id.a_password;
import static com.example.myapplication1.R.id.iv_denglu;
import static com.example.myapplication1.R.id.rg_Login;
import static com.example.myapplication1.R.id.tv_password;
import static com.example.myapplication1.R.id.zc_phone;
import androidx.activity.result.ActivityResult;
import androidx.activity.result.ActivityResultCallback;
import androidx.activity.result.ActivityResultLauncher;
import androidx.activity.result.contract.ActivityResultContracts;
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextUtils;
import android.text.TextWatcher;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;
import android.widget.Toast;
import com.google.android.material.internal.ViewUtils;
import java.text.BreakIterator;
import java.util.Random;
import java.util.concurrent.atomic.AtomicReference;
public class Main3Activity extends AppCompatActivity implements View.OnFocusChangeListener, RadioGroup.OnCheckedChangeListener, View.OnClickListener {
private EditText a_phone;
private TextView tv_password;
private EditText a_password;
private Button btn_forget;
private CheckBox ck_remember;
private RadioButton rb_password;
private RadioButton rb_verifycode;
private ActivityResultLauncher<Intent> regist;
private Button iv_denglu;
private String mpassword="20214121";
private String verifyCode;
private SharedPreferences preferences;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main3);
RadioGroup rg_login = findViewById(rg_Login);
tv_password = findViewById(R.id.tv_password);
a_password = findViewById(R.id.a_password);
btn_forget = findViewById(R.id.btn_forget);
ck_remember = findViewById(R.id.ck_remember);
rb_password = findViewById(R.id.rb_password);
rb_verifycode = findViewById(R.id.rb_verifycode);
rg_login.setOnCheckedChangeListener(this);
btn_forget.setOnClickListener(this);
regist = registerForActivityResult(new ActivityResultContracts.StartActivityForResult(), new ActivityResultCallback<ActivityResult>() {
@Override
public void onActivityResult(ActivityResult result) {
Intent intent =result.getData();
if(intent!=null && result.getResultCode() == Activity.RESULT_OK){
mpassword=intent.getStringExtra("new_password");
}
}
});
a_phone = findViewById(R.id.a_phone);
a_password.setOnFocusChangeListener(this);
Button button = findViewById(R.id.zhuceb);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent();
intent.setClass(Main3Activity.this, Zhuce.class);
startActivity(intent);
}
});
preferences = getSharedPreferences("confine", Context.MODE_PRIVATE);
iv_denglu = findViewById(R.id.iv_denglu);
iv_denglu.setOnClickListener(this);
reload();
}
public void reload(){
boolean isremember = preferences.getBoolean("remember",false);
if(isremember){
String phone = preferences.getString("phone","");
a_phone.setText(phone);
String password = preferences.getString("password","");
a_password.setText(password);
}
}
@Override
public void onFocusChange(View view, boolean b) {
if(b){
String phone = a_phone.getText().toString();
if(TextUtils.isEmpty(phone) || phone.length()<11){
a_phone.requestFocus();
Toast.makeText(this,"请输入11位手机号码", Toast.LENGTH_SHORT).show();
}
}
}
@Override
public void onCheckedChanged(RadioGroup radioGroup, int i) {
switch (i){
case R.id.rb_password:
tv_password.setText("密 码");
a_password.setText("请输入六位密码");
btn_forget.setText("忘记密码");
ck_remember.setVisibility(View.VISIBLE);
break;
case R.id.rb_verifycode:
tv_password.setText("验证码");
a_password.setText("请输入验证码");
btn_forget.setText("获取验证码");
ck_remember.setVisibility(View.GONE);
break;
}
}
@Override
public void onClick(View view) {
String phone= a_phone.getText().toString();
switch (view.getId()){
case R.id.btn_forget:
if(phone.length()<11){
Toast.makeText(this,"请输入11位手机号",Toast.LENGTH_SHORT).show();
return;
}
if(rb_password.isChecked()){
Intent intent = new Intent(this, Forget.class);
intent.putExtra("phone", phone);
regist.launch(intent);
}
else if(rb_verifycode.isChecked()){
verifyCode = String.format("%06d",new Random().nextInt(999999));
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("请记住验证码");
builder.setMessage("尊敬的用户"+phone+"您本次的验证码为"+ verifyCode);
builder.setPositiveButton("确认",null);
AlertDialog dialog = builder.create();
dialog.show();
}
break;
case R.id.iv_denglu:
if(rb_password.isChecked()){
if(!mpassword.equals(a_password.getText().toString())){
Toast.makeText(this,"请输入正确的密码",Toast.LENGTH_SHORT).show();
return;
}
loginSuccess();
}
else if(rb_verifycode.isChecked()){
if(!verifyCode.equals(a_password.getText().toString())){
Toast.makeText(this,"请输入正确的验证码",Toast.LENGTH_SHORT).show();
return;
}
loginSuccess();
}
}
}
private void loginSuccess() {
Intent intent = new Intent();
intent.setClass(Main3Activity.this, Menu.class);
startActivity(intent);
if(ck_remember.isChecked()) {
SharedPreferences.Editor editor = preferences.edit();
editor.putString("phone",a_phone.getText().toString());
editor.putString("password",a_password.getText().toString());
editor.putBoolean("remember",ck_remember.isChecked());
editor.commit();
}
}
}
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