011android初级篇之android登录界面的设计

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


    <RelativeLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:padding="15dip"
        android:layout_margin="15dip"
        android:background="@drawable/background_login_div">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentTop="true"
            android:layout_marginTop="5dp"
            android:text="@string/login_label_username"
            android:id="@+id/login_user_input"
            />
        <EditText
            android:id="@+id/username_edit"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:hint="@string/login_username_hint"
            android:layout_below="@+id/login_user_input"
            android:singleLine="true"
            android:inputType="text"
            />

        <TextView
            android:id="@+id/login_passwd_input"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@+id/username_edit"
            android:layout_marginTop="3dp"
            android:text="@string/login_label_passwd"/>
        <EditText
            android:id="@+id/passwd_edit"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_below="@id/login_passwd_input"
            android:password="true"
            android:singleLine="true"
            android:inputType="textPassword"/>
        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/login_button"
            android:layout_below="@id/passwd_edit"
            android:layout_alignRight="@id/passwd_edit"
            android:text="@string/login_label_signin"
            />
    </RelativeLayout>
    <RelativeLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content">
        <TextView
            android:id="@+id/infoWords"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/login_register_link"
            android:layout_marginLeft="15dp"
            android:textColor="#888"
            android:textColorLink="#FF0066CC"/>
        <ImageView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/cat"
            android:layout_alignParentRight="true"
            android:layout_alignParentBottom="true"
            android:layout_marginRight="25dp"
            android:layout_marginLeft="10dp"
            android:layout_marginBottom="25dp"
            android:id="@+id/logo"/>
        <ImageView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/logo"
            android:layout_toLeftOf="@id/logo"
            android:layout_alignBottom="@id/logo"
            android:layout_marginBottom="25dp"
            />

    </RelativeLayout>
</LinearLayout>

public class LoginActivity extends Activity {
    private static final String TAG = "LoginActivity" ;

    Button loginButton;
    EditText username_edit;
    EditText passwd_edit;
    TextView infoWords;
    public void onCreate(Bundle savedInstanceState){
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.login);

        username_edit = (EditText)findViewById(R.id.username_edit);
        passwd_edit  =  (EditText)findViewById(R.id.passwd_edit);
        infoWords    = (TextView)findViewById(R.id.infoWords);
        infoWords.setMovementMethod(LinkMovementMethod.getInstance());

        loginButton =(Button) findViewById(R.id.login_button);
        loginButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String user=username_edit.getText().toString().trim();
                String passwd=passwd_edit.getText().toString().trim();
                if(checkAcount(user,passwd)){
                    setResult(RESULT_OK);
                    finish();
                }
                else {
                    Toast.makeText(LoginActivity.this, "用户名密码不正确，请重新输入！", Toast.LENGTH_LONG).show();
                }

            }
        });
    }

    boolean checkAcount(String user,String passwd){
        // TODO: 2015/11/9
        Log.w(TAG,"checkAcconut "+user + passwd);
        if(user == "test" && passwd == user){
            return true;
        }
        return false;
    }
}

<string name="login_register_link">没有帐号，<a href='http://www.jianshu.com/users/2097e21ffc33/latest_articles'>注册</a></string>

<TextView
    android:id="@+id/infoWords"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/login_register_link"
    android:layout_marginLeft="15dp"
    android:textColor="#888"
    android:textColorLink="#FF0066CC"/>

textView.setMovementMethod(LinkMovementMethod.getInstance()); 

String html = "有问题：\n"; 
html+="www.baidu.com";//这里即使不加协议好HTTP；也能自动被系统识别出来。 
textView.setText(html); 
textView.setAutoLinkMask(Linkify.ALL); 
textView.setMovementMethod(LinkMovementMethod.getInstance());