初始化Demo

README.md

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 # HomeCaicaitong
  安卓小项目-家庭收支便签
-11

app/.gitignore

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+/build

app/build.gradle

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+plugins {
+    id 'com.android.application'
+}
+
+android {
+    compileSdk 31
+
+    defaultConfig {
+        applicationId "com.example.homecaicaitong"
+        minSdk 21
+        targetSdk 31
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    buildFeatures {
+        viewBinding true
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.2.0'
+    implementation 'com.google.android.material:material:1.3.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
+    implementation 'androidx.annotation:annotation:1.2.0'
+    implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.3.1'
+    implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.3.1'
+    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
+}

app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

app/src/androidTest/java/com/example/homecaicaitong/ExampleInstrumentedTest.java

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+package com.example.homecaicaitong;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.example.homecaicaitong", appContext.getPackageName());
+    }
+}

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.homecaicaitong">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="Demo"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.HomeCaicaitong">
+        <activity
+            android:name=".Sysset"
+            android:exported="false" />
+        <activity
+            android:name=".Showinfo"
+            android:exported="false" />
+        <activity
+            android:name=".Outaccountinfo"
+            android:exported="false" />
+        <activity
+            android:name=".InfoManage"
+            android:exported="false" />
+        <activity
+            android:name=".Inaccountinfo"
+            android:exported="false" />
+        <activity
+            android:name=".FlagManage"
+            android:exported="false" />
+        <activity
+            android:name=".AddOutaccount"
+            android:exported="false" />
+        <activity
+            android:name=".AddInaccount"
+            android:exported="false" />
+        <activity
+            android:name=".Accountflag"
+            android:exported="false" />
+        <activity
+            android:name=".Login"
+            android:exported="false" />
+        <activity
+            android:name=".MainActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

app/src/main/java/com/example/homecaicaitong/Accountflag.java

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+package com.example.homecaicaitong;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.Toast;
+
+import com.example.homecaicaitong.dao.FlagDAO;
+import com.example.homecaicaitong.model.Tb_flag;
+
+public class Accountflag extends AppCompatActivity {
+    private EditText txtFlag;
+    private Button btnflagSaveButton;// ????Button???????
+    private Button btnflagCancelButton;// ????Button???????
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.accountflag);
+
+        txtFlag = (EditText) findViewById(R.id.txtFlag);// ???????????
+        btnflagSaveButton = (Button) findViewById(R.id.btnflagSave);// ??????水?
+        btnflagCancelButton = (Button) findViewById(R.id.btnflagCancel);// ?????????
+        btnflagSaveButton.setOnClickListener(new View.OnClickListener() {// ????水????ü??????
+            @Override
+            public void onClick(View arg0) {
+                String strFlag = txtFlag.getText().toString();// ?????????????
+                if (!strFlag.isEmpty()) {// ?ж???????????
+                    FlagDAO flagDAO = new FlagDAO(Accountflag.this);// ????FlagDAO????
+                    Tb_flag tb_flag = new Tb_flag(flagDAO.getMaxId() + 1, strFlag);// ????Tb_flag????
+                    flagDAO.add(tb_flag);// ????????
+                    // ??????????
+                    Toast.makeText(Accountflag.this, "??????????????????????", Toast.LENGTH_SHORT).show();
+                } else {
+                    Toast.makeText(Accountflag.this, "??????????", Toast.LENGTH_SHORT).show();
+                }
+            }
+        });
+
+        btnflagCancelButton.setOnClickListener(new View.OnClickListener() {// ??????????ü??????
+            @Override
+            public void onClick(View arg0) {
+                txtFlag.setText("");// ??????????
+            }
+        });
+    }
+}

app/src/main/java/com/example/homecaicaitong/AddInaccount.java

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+package com.example.homecaicaitong;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.app.DatePickerDialog;
+import android.app.Dialog;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.DatePicker;
+import android.widget.EditText;
+import android.widget.Spinner;
+import android.widget.Toast;
+
+import com.example.homecaicaitong.dao.InaccountDAO;
+import com.example.homecaicaitong.model.Tb_inaccount;
+
+import java.util.Calendar;
+
+public class AddInaccount extends AppCompatActivity {
+    private static final int DATE_DIALOG_ID = 0;// 创建日期对话框常量
+    private EditText txtInMoney, txtInTime, txtInHandler, txtInMark;// 创建4个EditText对象
+    private Spinner spInType;// 创建Spinner对象
+    private Button btnInSaveButton;// 创建Button对象“保存”
+    private Button btnInCancelButton;// 创建Button对象“取消”
+
+    private int mYear;// 年
+    private int mMonth;// 月
+    private int mDay;// 日
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.addinaccount);// 设置布局文件
+        txtInMoney = (EditText) findViewById(R.id.txtInMoney);// 获取金额文本框
+        txtInTime = (EditText) findViewById(R.id.txtInTime);// 获取时间文本框
+        txtInHandler = (EditText) findViewById(R.id.txtInHandler);// 获取付款方文本框
+        txtInMark = (EditText) findViewById(R.id.txtInMark);// 获取备注文本框
+        spInType = (Spinner) findViewById(R.id.spInType);// 获取类别下拉列表
+        btnInSaveButton = (Button) findViewById(R.id.btnInSave);// 获取保存按钮
+        btnInCancelButton = (Button) findViewById(R.id.btnInCancel);// 获取取消按钮
+
+        txtInTime.setOnClickListener(new View.OnClickListener() {// 为时间文本框设置单击监听事件
+            @Override
+            public void onClick(View arg0) {
+                showDialog(DATE_DIALOG_ID);// 显示日期选择对话框
+            }
+        });
+
+        btnInSaveButton.setOnClickListener(new View.OnClickListener() {// 为保存按钮设置监听事件
+            @Override
+            public void onClick(View arg0) {
+                String strInMoney = txtInMoney.getText().toString();// 获取金额文本框的值
+                if (!strInMoney.isEmpty()) {// 判断金额不为空
+                    // 创建InaccountDAO对象
+                    InaccountDAO inaccountDAO = new InaccountDAO(AddInaccount.this);
+                    // 创建Tb_inaccount对象
+                    Tb_inaccount tb_inaccount = new Tb_inaccount(inaccountDAO.getMaxId() + 1, Double.parseDouble(strInMoney), txtInTime.getText()
+                            .toString(), spInType.getSelectedItem().toString(), txtInHandler.getText().toString(), txtInMark.getText().toString());
+                    inaccountDAO.add(tb_inaccount);// 添加收入信息
+                    // 弹出信息提示
+                    Toast.makeText(AddInaccount.this, "〖新增收入〗数据添加成功！", Toast.LENGTH_SHORT).show();
+                } else {
+                    Toast.makeText(AddInaccount.this, "请输入收入金额！", Toast.LENGTH_SHORT).show();
+                }
+            }
+        });
+
+        btnInCancelButton.setOnClickListener(new View.OnClickListener() {// 为取消按钮设置监听事件
+            @Override
+            public void onClick(View arg0) {
+                txtInMoney.setText("");// 设置金额文本框为空
+                txtInMoney.setHint("0.00");// 为金额文本框设置提示
+                txtInTime.setText("");// 设置时间文本框为空
+                txtInTime.setHint("2011-01-01");// 为时间文本框设置提示
+                txtInHandler.setText("");// 设置付款方文本框为空
+                txtInMark.setText("");// 设置备注文本框为空
+                spInType.setSelection(0);// 设置类别下拉列表默认选择第一项
+            }
+        });
+
+        final Calendar c = Calendar.getInstance();// 获取当前系统日期
+        mYear = c.get(Calendar.YEAR);// 获取年份
+        mMonth = c.get(Calendar.MONTH);// 获取月份
+        mDay = c.get(Calendar.DAY_OF_MONTH);// 获取天数
+
+        updateDisplay();// 显示当前系统时间
+    }
+
+    @Override
+    protected Dialog onCreateDialog(int id) {// 重写onCreateDialog方法
+
+        switch (id) {
+            case DATE_DIALOG_ID:// 弹出日期选择对话框
+                return new DatePickerDialog(this, mDateSetListener, mYear, mMonth, mDay);
+        }
+        return null;
+    }
+
+    private DatePickerDialog.OnDateSetListener mDateSetListener = new DatePickerDialog.OnDateSetListener() {
+        public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
+            mYear = year;// 为年份赋值
+            mMonth = monthOfYear;// 为月份赋值
+            mDay = dayOfMonth;// 为天赋值
+            updateDisplay();// 显示设置的日期
+        }
+    };
+
+    private void updateDisplay() {
+        // 显示设置的时间
+        txtInTime.setText(new StringBuilder().append(mYear).append("-").append(mMonth + 1).append("-").append(mDay));
+    }
+}