Android程序研发源码仿QQ微信登录页面.zip

package tjuci.dl.myweixin; import android.app.Activity; import android.app.AlertDialog; import android.graphics.Color; import android.graphics.drawable.BitmapDrawable; import android.os.Bundle; import android.view.Gravity; import android.view.LayoutInflater; import android.view.MotionEvent; import android.view.View; import android.view.View.OnClickListener; import android.view.Window; import android.widget.AbsListView; import android.widget.Button; import android.widget.EditText; import android.widget.PopupWindow; import android.widget.RelativeLayout; /** * 此类 是对布局main.xml上 控件的操作 * @author dl * */ public class LoginActivity extends Activity implements OnClickListener{ Button rebackBtn,loginBtn,forgetPasswdBtn; EditText userEdit,passwdEdit; PopupWindow popup ; RelativeLayout loginLayout; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.login); rebackBtn = (Button)findViewById(R.id.login_reback_btn); rebackBtn.setOnClickListener(this);//注册监听器 一定不能忘 loginBtn = (Button)findViewById(R.id.login_login_btn); loginBtn.setOnClickListener(this);//注册监听器 一定不能忘 passwdEdit = (EditText)findViewById(R.id.login_passwd_edit); userEdit = (EditText)findViewById(R.id.login_user_edit); forgetPasswdBtn = (Button)findViewById(R.id.forget_passwd); forgetPasswdBtn.setOnClickListener(this); loginLayout = (RelativeLayout)findViewById(R.id.login_layout); } @Override public void onClick(View v) { int viewId = v.getId(); switch (viewId) { case R.id.login_reback_btn://返回按钮 LoginActivity.this.finish();//关闭这个Activity 返回上一个Activity break; case R.id.login_login_btn://点击登录按钮 进行判断 用户名和密码是否为空 String userEditStr = userEdit.getText().toString().trim(); String passwdEditStr = passwdEdit.getText().toString().trim(); if(("".equals(userEditStr) || null == userEditStr) || ("".equals(passwdEditStr) || null == passwdEditStr)){//只要用户名和密码有一个为空 new AlertDialog.Builder(LoginActivity.this) .setIcon(getResources().getDrawable(R.drawable.login_error_icon)) .setTitle("登录失败") .setMessage("微信账号或密码不能为空，请输入微信账号或密码") .create().show(); } break; case R.id.forget_passwd://点击 “忘记密码” 这个文本 forgetPasswdBtn.setTextColor(Color.RED);//文本变成红色 View view = LayoutInflater.from(LoginActivity.this).inflate(R.layout.login_dialog, null); popup = new PopupWindow(view, AbsListView.LayoutParams.FILL_PARENT, AbsListView.LayoutParams.WRAP_CONTENT); popup.showAsDropDown(forgetPasswdBtn); popup.setFocusable(false); popup.setOutsideTouchable(true); popup.showAtLocation(forgetPasswdBtn, Gravity.CENTER, 0, 0); popup.update(); loginLayout.setBackgroundColor(Color.GRAY); forgetPasswdBtn.setBackgroundColor(Color.GRAY); forgetPasswdBtn.setEnabled(false); break; } } @Override public boolean onTouchEvent(MotionEvent event) { if(popup!= null && popup.isShowing()){ popup.dismiss(); loginLayout.setBackgroundColor(Color.WHITE); forgetPasswdBtn.setBackgroundColor(Color.WHITE); forgetPasswdBtn.setEnabled(true); } return super.onTouchEvent(event); } }