[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();
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());
}
}
}