main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <Button android:id="@+id/btnLogin" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="登陆" /> <Button android:id="@+id/btnRegister" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="注册" /> </LinearLayout>
login.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <TableLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:stretchColumns="1" > <TableRow> <TextView android:text="输入编号" /> <EditText android:hint="2-10个字符" android:id="@+id/etId"/> </TableRow> <TableRow> <TextView android:text="密码" /> <EditText android:id="@+id/etPwd" android:hint="2-10个字符" android:password="true" /> </TableRow> </TableLayout> <TableLayout android:layout_marginTop="20dp" android:layout_width="match_parent" android:layout_height="wrap_content" android:stretchColumns="0,1" > <TableRow> <Button android:id="@+id/btnLogin" android:background="@drawable/btn_bg" android:drawableLeft="@drawable/login32x32" android:padding="3dp" android:text="登陆" android:textColor="#fff" android:layout_gravity="center_horizontal"/> <Button android:id="@+id/btnExit" android:background="@drawable/btn_bg" android:drawableLeft="@drawable/exit32x32" android:padding="3dp" android:text="退出" android:textColor="#fff" android:layout_gravity="center_horizontal"/> </TableRow> </TableLayout> </LinearLayout>
mainActivity
package com.sxt.day04_02; import com.sxt.day04_02.entity.User; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; public class MainActivity extends Activity { static final int ACTION_LOGIN=0; static final int ACTION_REGISTER=10; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); setListener();//设置监听器 } //设置监听器 private void setListener() { setLoginClickListener(); setRegisterClickListener(); } private void setRegisterClickListener() { findViewById(R.id.btnRegister).setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { } }); } private void setLoginClickListener() { findViewById(R.id.btnLogin).setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { Intent intent=new Intent(MainActivity.this, LoginActivity.class);//当前activity和目标activity startActivityForResult(intent, ACTION_LOGIN);//启动LoginActivity并且要求他返回结果，ACTION_LOGIN请求码0， } }); } @Override//接收acticity返回的结果 protected void onActivityResult(int requestCode, int resultCode, Intent data) {//requestCode是请求码，就是这里的ACTION_LOGIN，resultCode是loginactivity的返回值OK,data是loginactivity的Intent对象。 super.onActivityResult(requestCode, resultCode, data); if(resultCode!=RESULT_OK){ return ; } switch (requestCode) { case ACTION_LOGIN: User user=(User) data.getSerializableExtra("user"); Log.i("main",user.toString()); break; case ACTION_REGISTER: break; } } }
loginActivity:
package com.sxt.day04_02; import com.sxt.day04_02.entity.User; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.text.TextUtils; import android.view.View; import android.view.View.OnClickListener; import android.widget.EditText; public class LoginActivity extends Activity { EditText metId,metPwd; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_login); initView(); setListener(); } private void setListener() { setLoginClickListener(); setExitClickListener(); } private void setExitClickListener() {//退出则不返回结果， findViewById(R.id.btnExit).setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { finish(); } }); } private void setLoginClickListener() { findViewById(R.id.btnLogin).setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { String id=metId.getText().toString(); if(TextUtils.isEmpty(id)){ metId.setError("编号不能为空"); return ; } String pwd=metPwd.getText().toString(); if(TextUtils.isEmpty(pwd)){ metPwd.setError("密码不能为空"); return ; } User user=new User(Integer.parseInt(id), pwd); Intent data=new Intent(LoginActivity.this, MainActivity.class);//当前activity和返回的activity data.putExtra("user", user); setResult(RESULT_OK, data);//设置返回结果， finish();//关闭当前activity } }); } private void initView() { metId=(EditText) findViewById(R.id.etId); metPwd=(EditText) findViewById(R.id.etPwd); } }
本文转自农夫山泉别墅博客园博客，原文链接：http://www.cnblogs.com/yaowen/p/4884106.html，如需转载请自行联系原作者
