1. UI界面:llayout.xml
<?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:orientation="vertical" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<TextView
android:id="@+id/text1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="username" />
<EditText
android:id="@+id/edit1"
android:layout_width="150dp"
android:layout_height="wrap_content" />
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<TextView
android:id="@+id/text2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="password" />
<EditText
android:id="@+id/edit2"
android:layout_width="150dp"
android:layout_height="wrap_content" />
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<Button
android:id="@+id/btn1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="登录" />
<Button
android:id="@+id/btn2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="注册" />
</LinearLayout>
</LinearLayout>
2. 逻辑处理:MainActivity.java
public class MainActivity extends Activity {
EditText username;
EditText password;
Button login;
Button reg;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.llayout);
username = (EditText) findViewById(R.id.edit1);
password = (EditText) findViewById(R.id.edit2);
login = (Button) findViewById(R.id.btn1);
reg = (Button) findViewById(R.id.btn2);
login.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
if (username.getText().toString().equals("") || password.getText().toString().equals("")) {
Toast.makeText(MainActivity.this, "用户名或密码不能为空!!!", 1).show();
} else if (username.getText().toString().equals("666") || password.getText().toString().equals("666")) {
Toast.makeText(MainActivity.this, "登录成功", 1).show();
} else {
Toast.makeText(MainActivity.this, "账号或密码错误!!!", 1).show();
}
}
});
}