مشکل در ایجاد دیتابیس {عین کد استاد}{مگه میشه}

1. شما باید از mkdirs() استفاده کنید
2. به جای نوشتن این خط :

 database.openOrCreateDatabase(DIR_DATABASE+"/database.sqlite",null);

باید از این خط استفاده کنید:

   database = SQLiteDatabase.openOrCreateDatabase(DIR_DATABASE+"/database.sqlite", null);

این ارور لوگ هست

08-24 11:46:52.877: E/memtrack(2174): Couldn't load memtrack module (No such file or directory)
08-24 11:46:52.877: E/android.os.Debug(2174): failed to load memtrack module: -2
08-24 11:46:53.833: E/cutils-trace(2195): Error opening trace file: No such file or directory (2)
08-24 11:46:53.873: E/memtrack(2195): Couldn't load memtrack module (No such file or directory)
08-24 11:46:53.873: E/android.os.Debug(2195): failed to load memtrack module: -2
08-24 11:46:54.293: E/OpenGLRenderer(2206): Getting MAX_TEXTURE_SIZE from GradienCache
08-24 11:46:54.297: E/OpenGLRenderer(2206): MAX_TEXTURE_SIZE: 8192
08-24 11:46:54.305: E/OpenGLRenderer(2206): Getting MAX_TEXTURE_SIZE from Caches::initConstraints()
08-24 11:46:54.305: E/OpenGLRenderer(2206): MAX_TEXTURE_SIZE: 8192

اینم فایل  Log

android manifest :

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
          package="com.hamid.learn.database">
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

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

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

</manifest>

کلاس G :

package com.hamid.learn.database;

import android.app.Application;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.os.Environment;

import java.io.File;

public class G extends Application {
  public static Context context;
  public static SQLiteDatabase database;
  public static final String DIR_SDCARD = Environment.getExternalStorageDirectory().getAbsolutePath();
  public static final String DIR_DATABASE = DIR_SDCARD + "/database-test/";

  @Override
  public void onCreate() {
    super.onCreate();
    context = this.getApplicationContext();
     new File(DIR_DATABASE).mkdirs();

    database = SQLiteDatabase.openOrCreateDatabase(DIR_DATABASE + "/database1.sqlite", null);
    database.execSQL("CREATE  TABLE  IF NOT EXISTS person " +
      " (person_id INTEGER PRIMARY KEY  AUTOINCREMENT  NOT NULL  UNIQUE" +
      " , person_name TEXT, " +
      "person_family TEXT," +
      " person_age INTEGER)");
    database.execSQL("INSERT INTO person (person_name,person_family,person_age) VALUES ('Ali', 'rahimi',20)");
  }

}

apply plugin: 'com.android.application'

android {
    compileSdkVersion 25
    buildToolsVersion "25.0.2"

    defaultConfig {
        applicationId "com.hamid.learn.database"
        minSdkVersion 16
        targetSdkVersion 25
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:25.1.1'
}

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.1.2'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}