本文讲述了在linux命令下导出导入.sql文件的方法。分享给大家供大家参考，具体如下：

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="online.geekgalaxy.layoutlearn"> <application 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=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name=".login"> <intent-filter> <action android:name="android.intent.action.MAIN" /> </intent-filter> </activity> <activity android:name=".register"> <intent-filter> <action android:name="android.intent.action.MAIN" /> </intent-filter> </activity> </application> </manifest>

MainActivity.java

package online.geekgalaxy.layoutlearn; import android.content.DialogInterface; import android.content.Intent; import android.support.v7.app.AlertDialog; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.EditText; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //login button final Button login = (Button) findViewById(R.id.button); final String user = "admin"; final String pass = "hello"; login.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { String username = ""; EditText editText1 = (EditText)findViewById(R.id.editText); username = editText1.getText().toString(); String password = ""; EditText editText2 = (EditText)findViewById(R.id.editText2); password = editText2.getText().toString(); if (username.equals(user) & password.equals(pass)) { Intent intent = new Intent(MainActivity.this, login.class); startActivity(intent); } else { new AlertDialog.Builder(MainActivity.this).setTitle("Error!").setMessage("Wrong username or password.") .setNegativeButton("OK",null) .show(); } } }); //register button final Button register = (Button) findViewById(R.id.button2); register.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { //提示框确定是否跳转 new AlertDialog.Builder(MainActivity.this).setTitle("Jump").setMessage("Ready to jump?") .setPositiveButton("Yes", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { Intent intent = new Intent(MainActivity.this, register.class); startActivity(intent); }}) .setNegativeButton("No",null) .show(); } }); } }

login.java

package online.geekgalaxy.layoutlearn; import android.app.Activity; import android.os.Bundle; /** * Created by jailman on 2017/9/18. */ public class login extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.login); } }

register.java

package online.geekgalaxy.layoutlearn; import android.app.Activity; import android.os.Bundle; /** * Created by jailman on 2017/9/18. */ public class register extends Activity{ @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.register); } }

activity_main.xml

<?xml version="1.0" encoding="utf-8"?> <android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_centerVertical="true" tools:context="online.geekgalaxy.layoutlearn.MainActivity"> <Button android:id="@+id/button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginRight="68dp" android:text="@string/login" app:layout_constraintRight_toLeftOf="@+id/button2" tools:layout_constraintTop_creator="1" android:layout_marginEnd="68dp" android:layout_marginTop="26dp" app:layout_constraintTop_toBottomOf="@+id/editText2" /> <Button android:id="@+id/button2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/register" tools:layout_constraintTop_creator="1" tools:layout_constraintRight_creator="1" android:layout_marginEnd="68dp" app:layout_constraintRight_toRightOf="parent" android:layout_marginTop="26dp" app:layout_constraintTop_toBottomOf="@+id/editText2" /> <EditText android:id="@+id/editText" android:layout_width="240dp" android:layout_height="45dp" android:layout_marginBottom="35dp" android:layout_marginEnd="68dp" android:layout_marginLeft="8dp" android:layout_marginRight="8dp" android:layout_marginStart="68dp" android:ems="10" android:hint="@string/username" android:inputType="textPersonName" app:layout_constraintBottom_toTopOf="@+id/editText2" app:layout_constraintHorizontal_bias="0.516" app:layout_constraintLeft_toLeftOf="@+id/editText2" app:layout_constraintRight_toRightOf="@+id/editText2" tools:layout_constraintLeft_creator="1" tools:layout_constraintRight_creator="1" tools:layout_editor_absoluteX="-15dp" tools:layout_editor_absoluteY="152dp" /> <EditText android:id="@+id/editText2" android:layout_width="240dp" android:layout_height="45dp" android:layout_marginEnd="69dp" android:layout_marginLeft="0dp" android:layout_marginRight="0dp" android:layout_marginStart="69dp" android:ems="10" android:hint="@string/password" android:inputType="textPassword" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintLeft_toLeftOf="@+id/button" app:layout_constraintRight_toRightOf="@+id/button2" app:layout_constraintTop_toTopOf="parent" tools:layout_constraintBottom_creator="1" tools:layout_constraintLeft_creator="1" tools:layout_constraintRight_creator="1" tools:layout_constraintTop_creator="1" /> <TextView android:id="@+id/textView2" android:layout_width="250dp" android:layout_height="65dp" android:layout_marginBottom="50dp" android:layout_marginLeft="8dp" android:layout_marginRight="8dp" android:autoText="false" android:text="Welcome" android:textAlignment="center" android:textSize="50sp" android:textStyle="bold" app:layout_constraintBottom_toTopOf="@+id/editText" app:layout_constraintHorizontal_bias="0.509" app:layout_constraintLeft_toLeftOf="@+id/editText" app:layout_constraintRight_toRightOf="@+id/editText" /> </android.support.constraint.ConstraintLayout>

login.xml

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:weightSum="1"> <TextView android:id="@+id/textView3" android:layout_width="0dp" android:layout_height="118dp" android:layout_marginTop="200dp" android:layout_weight="1" android:text="@string/great_you_ve_login" android:textAlignment="center" android:textSize="24sp" android:textStyle="bold" /> </LinearLayout>

register.xml

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent"> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center_vertical|center_horizontal" android:orientation="vertical"> <EditText android:id="@+id/editText5" android:layout_width="270dp" android:layout_height="wrap_content" android:ems="10" android:hint="Username" android:inputType="textPersonName" /> <EditText android:id="@+id/editText6" android:layout_width="270dp" android:layout_height="wrap_content" android:ems="10" android:hint="Email" android:inputType="textPersonName" /> <EditText android:id="@+id/editText7" android:layout_width="270dp" android:layout_height="wrap_content" android:ems="10" android:hint="Password" android:inputType="textPassword" /> <EditText android:id="@+id/editText8" android:layout_width="270dp" android:layout_height="wrap_content" android:ems="10" android:hint="Confirm password" android:inputType="textPassword" /> <Button android:id="@+id/button3" android:layout_width="270dp" android:layout_height="wrap_content" android:text="Submit" /> </LinearLayout> </LinearLayout>

strings.xml

<resources> <string name="app_name">LayoutLearn</string> <string name="login">Login</string> <string name="register">Register</string> <string name="username">Username</string> <string name="password">Password</string> <string name="great_you_ve_login">Great, you\'ve logged in!</string> </resources>

build.gradle

apply plugin: 'com.android.application' android { compileSdkVersion 25 buildToolsVersion "25.0.3" defaultConfig { applicationId "online.geekgalaxy.layoutlearn" minSdkVersion 19 targetSdkVersion 25 versionCode 1 versionName "1.0" testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } } } dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', { exclude group: 'com.android.support', module: 'support-annotations' }) compile 'com.android.support:appcompat-v7:25.3.1' compile 'com.android.support.constraint:constraint-layout:1.0.2' testCompile 'junit:junit:4.12' }