记住密码和自动登录界面的实现

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本讲内容:记住密码和自动登录界面的实现


示例效果图

    记住密码和自动登录界面的实现_第1张图片


下面是res/layout/activity_login.xml 布局文件:(登录介面)

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/login" >

    <ImageButton
        android:id="@+id/img_btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:background="@drawable/quit" />

    <TextView
        android:id="@+id/tv_zh"
        android:layout_width="wrap_content"
        android:layout_height="35dp"
        android:layout_marginLeft="15dp"
        android:layout_marginTop="12dp"
        android:gravity="bottom"
        android:text="帐号:"
        android:textColor="#000000"
        android:textSize="20sp" />

    <EditText
        android:id="@+id/et_zh"
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:layout_below="@+id/tv_zh"
        android:layout_marginLeft="15dp"
        android:layout_marginRight="12dp" />

    <TextView
        android:id="@+id/tv_pws"
        android:layout_width="wrap_content"
        android:layout_height="35dp"
        android:layout_below="@+id/et_zh"
        android:layout_marginLeft="15dp"
        android:layout_marginTop="12dp"
        android:gravity="bottom"
        android:text="密码:"
        android:textColor="#000000"
        android:textSize="20sp" />

    <EditText
        android:id="@+id/et_pws"
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:layout_below="@+id/tv_pws"
        android:layout_marginLeft="15dp"
        android:layout_marginRight="12dp" />

    <CheckBox
        android:id="@+id/cb_pws"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/et_pws"
        android:layout_marginLeft="15dp"
        android:text="记住密码"
        android:textColor="#000000" />

    <CheckBox
        android:id="@+id/cb_auto"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/cb_pws"
        android:layout_marginLeft="15dp"
        android:text="自动登录"
        android:textColor="#000000" />

    <Button
        android:id="@+id/btn_login"
        android:layout_width="80dp"
        android:layout_height="40dp"
        android:layout_alignParentRight="true"
        android:layout_alignTop="@+id/cb_auto"
        android:layout_below="@+id/et_pws"
        android:layout_marginRight="10dp"
        android:gravity="center"
        android:text="登录"
        android:textColor="#000000"
        android:textSize="20sp" />

</RelativeLayout>

下面是res/layout/activity_logo.xml 布局文件:(登录缓冲介面 )

<?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:background="@drawable/login"
    android:orientation="vertical" >

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="3" >

        <ProgressBar
            android:id="@+id/pgBar"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true" />

        <TextView
            android:id="@+id/tv1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@+id/pgBar"
            android:layout_centerHorizontal="true"
            android:text="正在登录..."
            android:textColor="#000000"
            android:textSize="20sp" />
    </RelativeLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:gravity="center" >

        <Button
            android:id="@+id/btn_back"
            android:layout_width="70dp"
            android:layout_height="35dp"
            android:text="取消"
            android:textColor="#000000"
            android:textSize="15sp" />
    </LinearLayout>

</LinearLayout>

下面是res/layout/activity_welcome.xml 布局文件:(欢迎界面 )

<?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:background="@drawable/bg"
    android:orientation="vertical" >

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dp"
        android:gravity="center"
        android:text="登陆成功,进入用户界面"
        android:textColor="#ff00ff"
        android:textSize="25sp" />

</LinearLayout>

下面是LoginActivity.java界面文件:(要注册)

public class LoginActivity extends Activity{
	private EditText userName,password;
	private CheckBox rem_pw,auto_login;
	private Button btn_login;
	private ImageButton btnQuit;
	
	private SharedPreferences sp;
	private String userNameValue,passwordValue;
	
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		this.requestWindowFeature(Window.FEATURE_NO_TITLE);//去除标题
		setContentView(R.layout.activity_login);
		
		initView();
		initData();
	}
	
	private void initView() {
		//获得实例对象
		userName=(EditText) findViewById(R.id.et_zh);
		password=(EditText) findViewById(R.id.et_pws);
		rem_pw=(CheckBox) findViewById(R.id.cb_pws);
		auto_login=(CheckBox) findViewById(R.id.cb_auto);
		btn_login=(Button) findViewById(R.id.btn_login);
		btnQuit=(ImageButton) findViewById(R.id.img_btn);
		sp=this.getSharedPreferences("userInfo", Context.MODE_WORLD_READABLE);
	}
	
	private void initData() {
		//判断记住密码多选框的状态
		if(sp.getBoolean("ISCHECK", false)){
			//设置默认是记录密码状态
			rem_pw.setChecked(true);
			userName.setText(sp.getString("USER_NAME", ""));
			password.setText(sp.getString("PASSWORD", ""));
			
			//判断自动登陆多选框状态
			if(sp.getBoolean("AUTO_ISCHECH", false)){
				 //设置默认是自动登录状态
				auto_login.setChecked(true);
				 //跳转界面
				Intent intent=new Intent(LoginActivity.this,LogoActivity.class);
				LoginActivity.this.startActivity(intent);
			}
		}
		
		// 登录监听事件  现在默认为用户名为:jin 密码:1230
		btn_login.setOnClickListener(new OnClickListener() {
			public void onClick(View arg0) {
				userNameValue=userName.getText().toString();
				passwordValue=password.getText().toString();
				
				if(userNameValue.equals("jin")&&passwordValue.equals("1230")){
					//Toast.makeText(LoginActivity.this,"登录成功", Toast.LENGTH_SHORT).show();
					//登录成功和记住密码框为选中状态才保存用户信息
					if(rem_pw.isChecked()){
						 //记住用户名、密码
						Editor editor=sp.edit();
						editor.putString("USER_NAME", userNameValue);
						editor.putString("PASSWORD", passwordValue);
						editor.commit();
					}
					//跳转界面
					Intent intent = new Intent(LoginActivity.this,LogoActivity.class);
					LoginActivity.this.startActivity(intent);
					//finish();
				}else{
					Toast.makeText(LoginActivity.this,"用户名或密码错误,请重新登录", Toast.LENGTH_LONG).show();
				}
			}
		});
		
		//监听记住密码多选框按钮事件
		rem_pw.setOnCheckedChangeListener(new OnCheckedChangeListener() {
			public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {
				if(rem_pw.isChecked()){
					Toast.makeText(LoginActivity.this,"记住密码已选中", Toast.LENGTH_LONG).show();
					sp.edit().putBoolean("ISCHECK", true).commit();
				}else{
					Toast.makeText(LoginActivity.this,"记住密码没有选中", Toast.LENGTH_LONG).show();
					sp.edit().putBoolean("ISCHECK", false).commit();
				}
			}
		});
		
		//监听自动登录多选框事件
		auto_login.setOnCheckedChangeListener(new OnCheckedChangeListener() {
			public void onCheckedChanged(CompoundButton arg0, boolean arg1) {
				if(auto_login.isChecked()){
					Toast.makeText(LoginActivity.this,"自动登录已选中", Toast.LENGTH_LONG).show();
					sp.edit().putBoolean("AUTO_ISCHECK", true).commit();
				}else{
					Toast.makeText(LoginActivity.this,"自动登录没有选中", Toast.LENGTH_LONG).show();
					sp.edit().putBoolean("AUTO_ISCHECK", false).commit();
				}
			}
		});
		
		//删除事件(退出程序)
		btnQuit.setOnClickListener(new OnClickListener() {
			public void onClick(View arg0) {
				finish();
			}
		});
	}

}

下面是LogoActivity.java界面文件:(要注册)

public class LogoActivity extends Activity implements Runnable{
	private ProgressBar progressBar;
	private Button backButton;
	
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		this.requestWindowFeature(Window.FEATURE_NO_TITLE);
		setContentView(R.layout.activity_logo);
		
		progressBar=(ProgressBar) findViewById(R.id.pgBar);
		backButton=(Button) findViewById(R.id.btn_back);
		progressBar.setMax(3000);
		
		//启动一个延迟线程  
        new Thread(this).start();  
		
		backButton.setOnClickListener(new OnClickListener() {
			public void onClick(View v) {
				finish();
			}
		});
	}

	public void run() {
		try {
			 Thread.sleep(2000);//延迟两秒时间  
			 startActivity(new Intent(this,WelcomeActivity.class));
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

}

下面是WelcomeActivity.java界面文件:

public class WelcomeActivity extends Activity{
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_welcome);
	}
}


Take your time and enjoy it 要原码的、路过的、学习过的请留个言,顶个呗~~

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