安卓簡單的登陸界面代碼

A. 高價急求一個安卓程序(簡單的登陸界面和注冊界面)源碼和程序 教程也可以

1
MainActivity

@
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button dengluButton =(Button)findViewById(R.id.button1);
Button zhuceButton=(Button)findViewById(R.id.button2);
final EditText yonghumingEditText=(EditText) findViewById(R.id.editText1);
final EditText mimaEditText=(EditText) findViewById(R.id.editText2);
zhuceButton.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
Intent intent=new Intent();
intent.setClass(MainActivity.this, ZhuceActivity.class);
startActivity(intent);
}
});

dengluButton.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
FileInputStream fis;
try {
fis = new
FileInputStream(Environment.getExternalStorageDirectory().getParent()+"/"+yonghumingEditText.getText().toString());
byte[] input =new byte[fis.available()];
while(fis.read(input)!=-1);
fis.close();
String mimastring=new String(input);
if (mimastring.equals(mimaEditText.getText().toString())==true) {
Toast.makeText(getApplicationContext(), new String(input),Toast.LENGTH_SHORT).show();
String mimaString= new String(input);
if (mimastring.equals(mimaEditText.getText().toString())==true) {
Toast.makeText(getApplicationContext(), "成功登陸", Toast.LENGTH_SHORT).show();
Intent intent =new Intent();
intent.setClass(MainActivity.this,ZhuceActivity.class );
startActivity(intent);

}
else {
Toast.makeText(getApplicationContext(), "用戶名或密碼錯誤", Toast.LENGTH_SHORT).show();

}
}
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Intent intent=new Intent(MainActivity.this,AbActivity.class);
startActivity(intent);

}

});
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}

}

2. ZhuceActivity

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_zhuce);
Button zhucebingfanhuiButton = (Button) findViewById(R.id.button1);
final EditText yonghumingEditText=(EditText) findViewById(R.id.editText1);
final EditText mimaEditText=(EditText) findViewById(R.id.editText2);

zhucebingfanhuiButton.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
File writeFile=new File(Environment.getExternalStorageDirectory().getPath(),yonghumingEditText.getText().toString());
if (!writeFile.exists()) {
try {
writeFile.createNewFile();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}
String abcString =mimaEditText.getText().toString();
FileOutputStream fos;
try {
fos=new FileOutputStream(writeFile);
fos.write(abcString.getBytes());
fos.flush();
fos.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Intent intent= new Intent();
intent.setClass(ZhuceActivity.this, MainActivity.class);
startActivity(intent);
}
});
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.zhuce, menu);
return true;
}

}

三、
package com.example.zhuanhuan;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import com.example.zhuanhuan.MainActivity;
import com.example.zhuanhuan.R;
import android.os.Bundle;
import android.os.Environment;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;

public class KkkActivity extends Activity {

private File writeFile;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.kkk);
Button backButton = (Button) findViewById(R.id.button1);
final EditText yonghumingEditText = (EditText) findViewById(R.id.editText1);
final EditText mimaEditText = (EditText) findViewById(R.id.editText2);

backButton.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub

File writeFile = new File(Environment.getExternalStorageDirectory().getPath(), yonghumingEditText.getText().toString());
if (!writeFile.exists()) {

try {
writeFile.createNewFile();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}

String abcString = mimaEditText.getText().toString();
FileOutputStream fos;

try {

fos = new FileOutputStream(writeFile);
fos.write(abcString.getBytes());
fos.flush();
fos.close();

} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Intent intent = new Intent();
intent.setClass(KkkActivity.this, MainActivity.class);
startActivity(intent);

}
});

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.kkk, menu);
return true;
}

}
四、
package com.example.zhuanhuan;

import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class AaaActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.aaa);

Button jianceButton = (Button) findViewById(R.id.button1);
jianceButton.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
Intent intent = new Intent();
intent.setClass(AaaActivity.this, qqqActivity.class);
startActivity(intent);
}
});

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.aaa, menu);
return true;
}

}

B. 如何使用Android Studio開發用戶登錄界面

activity_register.xml:
<?xmlversion="1.0"encoding="utf-8"?>
<LinearLayoutxmlns:android="

xmlns:tools="

android:id="@+id/activity_redister"
android:layout_width="match_parent"
android:orientation="vertical"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.weijun.test0321.RegisterActivity">

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="用戶名："
android:textSize="25sp"
/>
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/please_input_user_name"
android:id="@+id/input_user_name"
/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="密碼："
android:textSize="25sp"
/>
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="請輸入密碼"
android:id="@+id/input_user_password"
/>
</LinearLayout>
<RadioGroup
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:id="@+id/rg">
<RadioButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="男"
android:id="@+id/boy"
android:layout_weight="1"
/>
<RadioButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="女"
android:layout_weight="1"
android:id="@+id/girl"
/>
</RadioGroup>

<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="注冊"
android:id="@+id/bn_register"
android:layout_centerHorizontal="true"
/>
</RelativeLayout>
</LinearLayout>

activity_login.xml:
<?xmlversion="1.0"encoding="utf-8"?>
<LinearLayoutxmlns:android="

android:orientation="vertical"android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="10dp">


<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:text="登陸界面"
android:textSize="38sp"
/>
</RelativeLayout>

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="用戶名："
android:textSize="25sp"
/>
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/user_name"
/>
</LinearLayout>

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="密碼："
android:textSize="25sp"
/>
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/user_password"
/>
</LinearLayout>
<CheckBox
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="記住密碼？"
android:id="@+id/remember_password"
/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="登陸"
android:id="@+id/bn_login"
android:layout_centerHorizontal="true"
/>
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/tv_register"
android:text="注冊賬號"
android:layout_alignParentBottom="true"
android:textColor="@color/colorAccent"
/>

</RelativeLayout>
</LinearLayout>

MyOpenHelper.java:

{
publicMyOpenHelper(Contextcontext){
super(context,"info.db",null,1);
}

@Override
publicvoidonCreate(SQLiteDatabasedb){
db.execSQL("createtableinfo(_,namevarchar(20),passwordvarchar(20),sexvarchar(20))");
}

@Override
publicvoidonUpgrade(SQLiteDatabasedb,intoldVersion,intnewVersion){

}
}

registerActivity.java:

{
privateEditTextet_name,et_password;
privateRadioGrouprg;
privateButtonbn_register;
;
privateSQLiteDatabasedatabase;
privateCheckBoxcb_remember_password;
@Override
protectedvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_register);

initUI();
initListener();
}

privatevoidinitListener(){
bn_register.setOnClickListener(newView.OnClickListener(){
@Override
publicvoidonClick(Viewv){
Stringget_name=et_name.getText().toString().trim();
Stringget_password=et_password.getText().toString().trim();
if(TextUtils.isEmpty(get_name)||TextUtils.isEmpty(get_password)){
Toast.makeText(RegisterActivity.this,"請輸入用戶名或密碼",Toast.LENGTH_SHORT).show();
}else{
inttemp=rg.getCheckedRadioButtonId();
intsex=0;
switch(temp){
caseR.id.boy:
sex=1;
break;
caseR.id.girl:
sex=2;
break;
}
if(sex==0){
Toast.makeText(RegisterActivity.this,"請選擇性別",Toast.LENGTH_SHORT).show();
}elseif(sex==1){
myOpenHelper=newMyOpenHelper(RegisterActivity.this);
database=myOpenHelper.getReadableDatabase();
ContentValuesvalues=newContentValues();
values.put("name",get_name);
values.put("password",get_password);
values.put("sex","男");
database.insert("info",null,values);
}else{
myOpenHelper=newMyOpenHelper(RegisterActivity.this);
database=myOpenHelper.getReadableDatabase();
ContentValuesvalues=newContentValues();
values.put("name",get_name);
values.put("password",get_password);
values.put("sex","女");
database.insert("info",null,values);
}
}
}
});
}

privatevoidinitUI(){
et_name=(EditText)findViewById(R.id.input_user_name);
et_password=(EditText)findViewById(R.id.input_user_password);
rg=(RadioGroup)findViewById(R.id.rg);
bn_register=(Button)findViewById(R.id.bn_register);

}
}

loginActivity.java貼不上來，超過字數了。

C. android怎麼做動態的登陸界面

設計android的登錄界面的方法：

UI實現的代碼如下：

1、背景設置圖片：

background_login.xml

<?xmlversion="1.0"encoding="utf-8"?>

<shapexmlns:android="http://schemas.android.com/apk/res/android">

<gradient

android:startColor="#FFACDAE5"

android:endColor="#FF72CAE1"

android:angle="45"

/>

</shape>

2、圓角白框

效果圖上面的並不是白框，其實框是白色的，只是設置了透明值，也是靠一個xml文件實現的。

background_login_div.xml

<?xmlversion="1.0"encoding="UTF-8"?>

<shapexmlns:android="http://schemas.android.com/apk/res/android">

<solidandroid:color="#55FFFFFF"/>

<!--設置圓角

注意：bottomRightRadius是左下角而不是右下角bottomLeftRadius右下角-->

<cornersandroid:topLeftRadius="10dp"android:topRightRadius="10dp"

android:bottomRightRadius="10dp"android:bottomLeftRadius="10dp"/>

</shape>

3、界面布局：

login.xml

<?xmlversion="1.0"encoding="utf-8"?>

<LinearLayout

xmlns:android="http://schemas.android.com/apk/res/android"

android:orientation="vertical"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:background="@drawable/background_login">

<!--padding內邊距layout_margin外邊距

android:layout_alignParentTop布局的位置是否處於頂部-->

<RelativeLayout

android:id="@+id/login_div"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:padding="15dip"

android:layout_margin="15dip"

android:background="@drawable/background_login_div_bg">

<!--賬號-->

<TextView

android:id="@+id/login_user_input"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignParentTop="true"

android:layout_marginTop="5dp"

android:text="@string/login_label_username"

style="@style/normalText"/>

<EditText

android:id="@+id/username_edit"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:hint="@string/login_username_hint"

android:layout_below="@id/login_user_input"

android:singleLine="true"

android:inputType="text"/>

<!--密碼text-->

<TextView

android:id="@+id/login_password_input"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_below="@id/username_edit"

android:layout_marginTop="3dp"

android:text="@string/login_label_password"

style="@style/normalText"/>

<EditText

android:id="@+id/password_edit"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:layout_below="@id/login_password_input"

android:password="true"

android:singleLine="true"

android:inputType="textPassword"/>

<!--登錄button-->

<Button

android:id="@+id/signin_button"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_below="@id/password_edit"

android:layout_alignRight="@id/password_edit"

android:text="@string/login_label_signin"

android:background="@drawable/blue_button"/>

</RelativeLayout>

<RelativeLayout

android:layout_width="fill_parent"

android:layout_height="wrap_content">

<TextViewandroid:id="@+id/register_link"

android:text="@string/login_register_link"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginLeft="15dp"

android:textColor="#888"

android:textColorLink="#FF0066CC"/>

<ImageViewandroid:id="@+id/miniTwitter_logo"

android:src="@drawable/cat"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignParentRight="true"

android:layout_alignParentBottom="true"

android:layout_marginRight="25dp"

android:layout_marginLeft="10dp"

android:layout_marginBottom="25dp"/>

<ImageViewandroid:src="@drawable/logo"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_toLeftOf="@id/miniTwitter_logo"

android:layout_alignBottom="@id/miniTwitter_logo"

android:paddingBottom="8dp"/>

</RelativeLayout>

</LinearLayout>

4、java源代碼，Java源文件比較簡單，只是實例化Activity，去掉標題欄。

packagecom.mytwitter.acitivity;

importandroid.app.Activity;

importandroid.os.Bundle;

importandroid.view.Window;

{

@Override

publicvoidonCreate(BundlesavedInstanceState){

super.onCreate(savedInstanceState);

requestWindowFeature(Window.FEATURE_NO_TITLE);

setContentView(R.layout.login);

}

}

5、實現效果如下：

D. Android登錄界面點擊登錄顯示登錄成功對話框，點擊取消關掉對話框，求代碼怎麼寫

Button btn = (Button)this.findViewById(R.id.btn);

btn.setText("登陸");

btn.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);

builder.setMessage("登陸成功").setCancelable(false).setNegativeButton("取消", new DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

return;

}

});

AlertDialog alert = builder.create();

alert.show();

}

});

E. 用eclipse開發安卓應用，現在只做了個界面。請問在點擊「登錄」以後怎麼跳轉頁面，代碼怎麼寫，怎

在 onClick中寫
Intent intent = new Intent(LoginActivity.this, HelloWorldActivity.class);
startActivity(intent);
假定你當前的類叫回LoginActivity，要啟動答的叫HelloWorldActivity

F. 如何使用Android Studio開發用戶登錄界面

一個登錄界面需要有：

1. 登錄、注冊按鈕（Button）

2. 用戶名、密碼輸入框（TextView，EditView）

3. 用戶協議連接

4. 忘記密碼按鈕

   
   

想好的有哪些控制項後，開始設計界面大概樣式，比如這個樣子：

安卓登錄界面就寫完了。

G. 如何使用Android Studio開發用戶登錄界面

使用Android Studio開發用戶登錄界面是可以直接創建的，創建步驟如下。

1、點擊菜單欄的「File」-->"New"-->「New Project 」。