greenDAO Android在文件数据库中没有创建表

问题描述 投票:0回答:1

[我接受了https://blog.mindorks.com/powerful-android-orm-greendao-3-tutorial的指导,将greenDAO集成到了我的android项目中,我遵循了所有内容(或者我认为是XD),当我尝试在移动设备上时,它不是创建表,而是创建数据库文件,但是当我打开时与观众一起观看时,不会显示任何内容。

我没有如何在仿真器中进行测试,以查看这是手机问题还是我需要的某些权限。

我将离开项目,看看您是否可以帮助我,非常感谢。

https://anonfile.com/R6j6J2d5o1/Test_zip

文件清单

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.cafl.test">

    <application
        android:name="com.cafl.test.AppDbController"
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name="com.cafl.test.MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

文件gradle项目

buildscript {
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.6.0'
        classpath 'org.greenrobot:greendao-gradle-plugin:3.2.2'
    }
}
allprojects {
    repositories {
        google()
        jcenter()
    }
}
task clean(type: Delete) {
    delete rootProject.buildDir
}

文件gradle模块

apply plugin: 'com.android.application'
apply plugin: 'org.greenrobot.greendao'

android {
    compileSdkVersion 29
    buildToolsVersion "29.0.3"

    defaultConfig {
        applicationId "com.cafl.test"
        minSdkVersion 23
        targetSdkVersion 29
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }

}
greendao{
    schemaVersion 1
}
dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])

    implementation 'androidx.appcompat:appcompat:1.1.0'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
    implementation 'org.greenrobot:greendao:3.2.2'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
}

DaoMaster和DaoSession其创建以创建项目

并且在测试时,我正在使用原始的DaoMaster函数

mDaoSession = new DaoMaster(
                new DaoMaster.DevOpenHelper(this, "greendao_demo.db").getWritableDb()).newSession();

database file in my smathphone

sqlite viewer online empty

no matches found

android database sqlite android-studio greendao
1个回答
0
投票

只需检查您的项目,就可以了。在MainActivity中,您可以查询并设置为textView,记住将您的textview ID设置为nameTv:

public class MainActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    TextView textView = (TextView) findViewById(R.id.nameTv);

    // Put this in a different thread or use AsyncSession in greenDAO.
    // For Demo purpose, this query is made on main thread but it should in a different thread.
    M_User user = ((AppDbController)getApplication()).getDaoSession().getM_UserDao().load(1L);

    if(user != null){
        textView.setText(user.getFullName());
    }
}

}

© www.soinside.com 2019 - 2024. All rights reserved.