Android实现闪屏及注册和登录界面之间的切换效果

在没给大家介绍正文之前先给大家说下实现思路：

先分别实现闪屏、注册界面、登录界面的活动，再用intent将相关的活动连接起来，实现不同活动之间的跳转。此次试验代码较多，我只列出主要代码，详细的代码可用底部的下载链接下载。

一、实验效果图：

二、主要代码：

（1）welcomeactivity.java（这部分代码实现的是第一页的欢迎页面）

package com.example.flashscreendemo; 
import android.app.activity; 
import android.content.intent; 
import android.os.bundle; 
import android.view.animation.alphaanimation; 
import android.view.animation.animation; 
import android.view.animation.animation.animationlistener; 
import android.view.animation.rotateanimation; 
import android.widget.imageview; 
import android.widget.relativelayout; 
public class weclomeactivity extends activity { 
private relativelayout layoutwecome; 
private imageview ivmonkey; 
@override 
protected void oncreate(bundle savedinstancestate) { 
super.oncreate(savedinstancestate); 
/* 
* requestwindowfeature(window.feature_no_title); //取消电量状态栏 
* this.getwindow().setflags(windowmanager.layoutparams.flag_fullscreen, 
* windowmanager.layoutparams.flag_fullscreen); 
*/ 
setcontentview(r.layout.activity_weclome); 
layoutwecome = (relativelayout) findviewbyid(r.id.layoutwelcome); 
alphaanimation alphaanimation = new alphaanimation(0.0f, 1.0f); 
alphaanimation.setduration(1000); 
layoutwecome.startanimation(alphaanimation); 
ivmonkey = (imageview) findviewbyid(r.id.ivmonkey); 
rotateanimation rotateanimation = new rotateanimation(0, 360); 
rotateanimation.setduration(2000); 
rotateanimation.setrepeatcount(2); 
ivmonkey.startanimation(rotateanimation); 
rotateanimation.setanimationlistener(new animationlistener() { 
@override 
public void onanimationstart(animation animation) { 
} 
@override 
public void onanimationrepeat(animation animation) { 
} 
@override 
public void onanimationend(animation animation) { 
intent intent = new intent(weclomeactivity.this, 
guideactivity.class); 
startactivity(intent); 
finish(); 
} 
}); 
} 
}

（2）guideactivity.java（这部分代码实现的是四个引导界面的功能）

package com.example.flashscreendemo; 
import java.util.arraylist; 
import java.util.list; 
import com.example.flashscreendemo.adapter.guideadapter; 
import android.app.activity; 
import android.content.intent; 
import android.os.bundle; 
import android.support.v4.view.viewpager; 
import android.support.v4.view.viewpager.onpagechangelistener; 
import android.view.layoutinflater; 
import android.view.menu; 
import android.view.view; 
import android.widget.imageview; 
public class guideactivity extends activity { 
private viewpager vpguide; 
private imageview ivdots[]; 
private int[] dots_id; 
@override 
protected void oncreate(bundle savedinstancestate) { 
super.oncreate(savedinstancestate); 
setcontentview(r.layout.activity_guide); 
initguideviews(); 
initdots(); 
vpguide.setonpagechangelistener(new onpagechangelistener() { 
@override 
public void onpageselected(int position) { 
for (int i = 0; i < ivdots.length; i++) { 
if (position == i) { 
ivdots[i] 
.setimageresource(r.drawable.bg_point_selected); 
} else { 
ivdots[i].setimageresource(r.drawable.bg_point_normal); 
} 
} 
} 
@override 
public void onpagescrolled(int position, float arg1, int arg2) { 
} 
@override 
public void onpagescrollstatechanged(int postion) { 
} 
}); 
} 
public void jumpmain(view view) { 
intent intent = new intent(this, 
com.example.minitwittersimulate.loginactivity.class); 
startactivity(intent); 
finish(); 
} 
private void initdots() { 
dots_id = new int[] { r.id.ivdots1, r.id.ivdots2, r.id.ivdots3, 
r.id.ivdots4 }; 
ivdots = new imageview[dots_id.length]; 
for (int i = 0; i < ivdots.length; i++) { 
ivdots[i] = (imageview) findviewbyid(dots_id[i]); 
} 
} 
private void initguideviews() { 
vpguide = (viewpager) findviewbyid(r.id.vpguide); 
list<view> views = new arraylist<view>(); 
layoutinflater layoutinflater = getlayoutinflater(); 
view view1 = layoutinflater.inflate(r.layout.view1ofpager, null); 
views.add(view1); 
view view2 = layoutinflater.inflate(r.layout.view2ofpager, null); 
views.add(view2); 
view view3 = layoutinflater.inflate(r.layout.view3ofpager, null); 
views.add(view3); 
view view4 = layoutinflater.inflate(r.layout.view4ofpager, null); 
views.add(view4); 
guideadapter guideadapter = new guideadapter(views); 
vpguide.setadapter(guideadapter); 
} 
@override 
public boolean oncreateoptionsmenu(menu menu) { 
// inflate the menu; this adds items to the action bar if it is present. 
getmenuinflater().inflate(r.menu.guide, menu); 
return true; 
} 
}

（3）guideadapter.java（这部分代码实现的是数据适配的功能）

package com.example.flashscreendemo.adapter; 
import java.util.list; 
import android.support.v4.view.pageradapter; 
import android.view.view; 
import android.view.viewgroup; 
public class guideadapter extends pageradapter { 
private list<view> views; 
public guideadapter(list<view> views) { 
super(); 
this.views = views; 
} 
@override 
public int getcount() { 
return views.size(); 
} 
@override 
public boolean isviewfromobject(view view, object object) { 
return view == object; 
} 
@override 
public object instantiateitem(viewgroup container, int position) { 
container.addview(views.get(position)); 
return views.get(position); 
} 
@override 
public void destroyitem(viewgroup container, int position, object object) { 
container.removeview(views.get(position)); 
} 
}

（4）loginactivity.java（这部分代码是登录界面的实现）

package com.example.minitwittersimulate; 
import android.app.activity; 
import android.content.intent; 
import android.content.sharedpreferences; 
import android.os.bundle; 
import android.preference.preferencemanager; 
import android.view.view; 
import android.view.view.onclicklistener; 
import android.widget.button; 
import android.widget.checkbox; 
import android.widget.edittext; 
import android.widget.textview; 
import android.widget.toast; 
import com.example.flashscreendemo.r; 
public class loginactivity extends activity { 
private sharedpreferences pref; 
private sharedpreferences.editor editor; 
private edittext etusername; 
private edittext etpassword; 
private button btnlogin; 
private checkbox cbrememberpass; 
private textview tvre; 
@override 
protected void oncreate(bundle savedinstancestate) { 
super.oncreate(savedinstancestate); 
setcontentview(r.layout.activity_login); 
pref = preferencemanager.getdefaultsharedpreferences(this); 
etusername = (edittext) findviewbyid(r.id.etusername); 
etpassword = (edittext) findviewbyid(r.id.etpassword); 
cbrememberpass = (checkbox) findviewbyid(r.id.cbrememberpass); 
btnlogin = (button) findviewbyid(r.id.btnlogin); 
tvre = (textview) findviewbyid(r.id.tvre); 
boolean isremember = pref.getboolean("remember_password", false); 
if (isremember) {// 将账号和密码都设置到文本框中 
string account = pref.getstring("account", ""); 
string password = pref.getstring("password", ""); 
etusername.settext(account); 
etpassword.settext(password); 
cbrememberpass.setchecked(true); 
} 
btnlogin.setonclicklistener(new onclicklistener() { 
@override 
public void onclick(view v) { 
string account = etusername.gettext().tostring(); 
string password = etpassword.gettext().tostring(); 
if (account.trim().equals("")) { 
toast.maketext(loginactivity.this, "请您输入用户名！", 
toast.length_short).show(); 
return; 
} 
if (password.trim().equals("")) { 
toast.maketext(loginactivity.this, "请您输入密码！", 
toast.length_short).show(); 
return; 
} 
if (account.equals("admin") && password.equals("123456")) { 
editor = pref.edit(); 
if (cbrememberpass.ischecked()) {// 检查复选框是否被选中 
editor.putboolean("remember_password", true); 
editor.putstring("account", account); 
editor.putstring("password", password); 
} 
else { 
editor.clear(); 
} 
editor.commit(); 
intent intent = new intent(loginactivity.this, 
mainactivity.class); 
startactivity(intent); 
finish(); 
} else { 
toast.maketext(loginactivity.this, 
"account or password is invalid", 
toast.length_short).show(); 
} 
} 
}); 
tvre.setonclicklistener(new onclicklistener() { 
@override 
public void onclick(view v) { 
// todo auto-generated method stub 
intent intent = new intent(loginactivity.this, register.class); 
startactivity(intent); 
finish(); 
} 
}); 
} 
}

（5）user.java（这部分代码实现向注册界面传入用户输入的数据）

package com.example.minitwittersimulate; 
public class user { 
private string username; 
private string password; 
private char sex; 
private string city; 
private string hobby; 
public string getusername() { 
return username; 
} 
public void setusername(string username) { 
this.username = username; 
} 
public string getpassword() { 
return password; 
} 
public void setpassword(string password) { 
this.password = password; 
} 
public char getsex() { 
return sex; 
} 
public void setsex(char sex) { 
this.sex = sex; 
} 
public string getcity() { 
return city; 
} 
public void setcity(string city) { 
this.city = city; 
} 
public string gethobby() { 
return hobby; 
} 
public void sethobby(string hobby) { 
this.hobby = hobby; 
} 
public user(string username, string password, char sex, string city, 
string hobby) { 
super(); 
this.username = username; 
this.password = password; 
this.sex = sex; 
this.city = city; 
this.hobby = hobby; 
} 
@override 
public string tostring() { 
// todo auto-generated method stub 
return this.username + "," + this.password + "," + this.sex + "," 
+ this.city + "," + this.hobby; 
} 
}

（6）register.java（这部分代码是注册界面的实现）

package com.example.minitwittersimulate; 
import com.example.flashscreendemo.r; 
import android.app.activity; 
import android.content.intent; 
import android.os.bundle; 
import android.text.textutils; 
import android.view.view; 
import android.widget.checkbox; 
import android.widget.edittext; 
import android.widget.radiobutton; 
import android.widget.spinner; 
import android.widget.toast; 
public class register extends activity { 
edittext etuser, etpassw, etrepassw; 
radiobutton rbmale, rbfamale; 
checkbox cbread, cbtourist, cbplaygame; 
spinner spcity; 
@override 
protected void oncreate(bundle savedinstancestate) { 
super.oncreate(savedinstancestate); 
setcontentview(r.layout.activity_register); 
init(); 
} 
private void init() { 
// todo auto-generated method stub 
etuser = (edittext) findviewbyid(r.id.etuser); 
etpassw = (edittext) findviewbyid(r.id.etpassw); 
etrepassw = (edittext) findviewbyid(r.id.etrepassw); 
rbmale = (radiobutton) findviewbyid(r.id.rbmale); 
rbfamale = (radiobutton) findviewbyid(r.id.rbfamale); 
cbread = (checkbox) findviewbyid(r.id.cbread); 
cbtourist = (checkbox) findviewbyid(r.id.cbtourist); 
cbplaygame = (checkbox) findviewbyid(r.id.cbplaygame); 
spcity = (spinner) findviewbyid(r.id.spcity); 
} 
public void onclick(view view) { 
switch (view.getid()) { 
case r.id.btregister: 
string username = etuser.gettext().tostring(); 
if (textutils.isempty(username)) { 
toast.maketext(this, "用户名不能为空", 2000).show(); 
return; 
} 
string passw = etpassw.gettext().tostring(); 
if (textutils.isempty(passw)) { 
etpassw.seterror("密码不能为空"); 
return; 
} 
string repassw = etrepassw.gettext().tostring(); 
if (textutils.isempty(repassw)) { 
etrepassw.seterror("确认密码不能为空"); 
return; 
} 
if (!passw.equals(repassw)) { 
toast.maketext(this, "两次密码不一致", 2000).show(); 
return; 
} 
char sex; 
if (rbmale.ischecked()) { 
sex = rbmale.gettext().charat(0); 
} else { 
sex = rbfamale.gettext().charat(0); 
} 
stringbuffer s = new stringbuffer(); 
if (cbread.ischecked()) { 
s.append(cbread.gettext().tostring() + ","); 
} 
if (cbtourist.ischecked()) { 
s.append(cbtourist.gettext().tostring() + ","); 
} 
if (cbplaygame.ischecked()) { 
s.append(cbplaygame.gettext().tostring() + ","); 
} 
string city = spcity.getselecteditem().tostring(); 
user user = new user(username, passw, sex, 
s.tostring().equals("") ? "" : s.tostring().substring(0, 
s.length()), city); 
toast.maketext(this, "用户注册信息：" + user.tostring(), 100000).show(); 
intent intent = new intent(register.this, loginactivity.class); 
startactivity(intent); 
finish(); 
break; 
case r.id.bteixt: 
finish(); 
break; 
case r.id.btreturn: 
intent intent1 = new intent(register.this, loginactivity.class); 
startactivity(intent1); 
finish(); 
break; 
} 
} 
}

（7）mainactivity.java（这部分代码实现的是点击“登录”按钮后跳转到的界面）

package com.example.minitwittersimulate; 
import android.app.activity; 
import android.os.bundle; 
import android.view.menu; 
import com.example.flashscreendemo.r; 
public class mainactivity extends activity { 
@override 
protected void oncreate(bundle savedinstancestate) { 
super.oncreate(savedinstancestate); 
setcontentview(r.layout.activity_main); 
} 
@override 
public boolean oncreateoptionsmenu(menu menu) { 
getmenuinflater().inflate(r.menu.main, menu); 
return true; 
} 
} 

以上所述是小编给大家介绍的android实现闪屏及注册和登录界面之间的切换效果，希望对大家有所帮助