你不能左右天气,但可以改变心情。你不能改变容貌,但可以掌握自己。你不能预见明天,但可以珍惜今天。
本讲内容:记住密码和自动登录界面的实现
示例效果图
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>
<?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>
<?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>
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(); } }); } }
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(); } } }
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~~