Android学习笔记-EditText&TextView&Button&菜单栏
来源:互联网 发布:新加坡李家王朝 知乎 编辑:程序博客网 时间:2024/05/21 10:40
界面文件activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context="com.example.activity_03.MainActivity" > <EditText android:id="@+id/factor_one" android:layout_width="fill_parent" android:layout_height="wrap_content" /> <TextView android:id="@+id/symbol" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@+id/factor_one" /> <EditText android:id="@+id/factor_two" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@+id/symbol" /> <Button android:id="@+id/multiply" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@+id/factor_two" /></RelativeLayout>
界面文件result.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" > <TextView android:id="@+id/result" android:layout_width="fill_parent" android:layout_height="wrap_content" /></LinearLayout>
MainActivity.java
public class MainActivity extends ActionBarActivity {private EditText factor_one;private EditText factor_two;private TextView symbol;private Button multiply; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); factor_one = (EditText) findViewById(R.id.factor_one); factor_two = (EditText) findViewById(R.id.factor_two); symbol = (TextView) findViewById(R.id.symbol); multiply = (Button) findViewById(R.id.multiply); symbol.setText(R.string.symbol); multiply.setText("计算"); multiply.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubString factor_one_str = factor_one.getText().toString();String factor_two_str = factor_two.getText().toString();Intent intent = new Intent();intent.putExtra("factor_one_str", factor_one_str);intent.putExtra("factor_two_str", factor_two_str);intent.setClass(MainActivity.this, ResultActivity.class);MainActivity.this.startActivity(intent);}}); } @Override public boolean onCreateOptionsMenu(Menu menu) {//设置菜单 //MenuItem android.view.Menu.add(int groupId, int itemId, int order, int titleRes) menu.add(0, 1, 1, R.string.about); menu.add(0, 2, 2, R.string.exit); return super.onCreateOptionsMenu(menu); } @Override public boolean onOptionsItemSelected(MenuItem item) {//选中菜单选项之后进行的操作 if (item.getItemId() == 1) {//关于}else if (item.getItemId() == 2) {//退出finish();} return super.onOptionsItemSelected(item); }}
ResultActivity.java
public class ResultActivity extends Activity{private TextView result;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.result);String factor_one_str = getIntent().getStringExtra("factor_one_str");String factor_two_str = getIntent().getStringExtra("factor_two_str");int factor_one = Integer.parseInt(factor_one_str);int factor_two = Integer.parseInt(factor_two_str);result = (TextView) findViewById(R.id.result);result.setText(factor_one * factor_two + "");}}
strings.xml
<?xml version="1.0" encoding="utf-8"?><resources> <string name="app_name">Activity_03</string> <string name="hello_world">Hello world!</string> <string name="action_settings">Settings</string> <string name="symbol">乘以</string><string name="exit">退出</string><string name="about">关于</string></resources>
AndroidManifest.xml 中注册Activity
<activity android:name=".ResultActivity" android:label="ResultActivity"/>
本文出自 “优赛工作室” 博客,请务必保留此出处http://shamrock.blog.51cto.com/2079212/1575845
0 0
- Android学习笔记-EditText&TextView&Button&菜单栏
- Android学习笔记-EditText&TextView&Button&菜单栏
- Android---2---TextView、Button、EditText
- Android入门笔记 - 界面开发 - TextView,Button,EditText,Toast
- Android学习(一)TextView,ImageView,Button,EditText,控件
- Android学习笔记3 - Button & TextView
- Android-TextView及其子类(TextView、EditText、Button)
- TextView、Button、EditText
- TextView EditText和Button
- 1.TextView、EditText、Button
- Android用户界面基础之TextView控件,EditText控件,Button控件的学习
- Android学习--TextView和Button
- 基本的UI组件(TextView、EditText、Button、ImageView、SeekBar)学习
- Android下Button/TextView/EditText/Menu的使用
- Android开发8:UI组件TextView,EditText,Button
- Android控件——TextView、EditText、ImageView、Button、ImageButton
- Android常见的几个控件(TextView,EditText,Button)
- Android基本常用控件的介绍TextView EditText Button Menu
- Linux学习笔记
- Android学习笔记
- [数据结构与算法分析] 栈的数组实现
- iOS获取路由器地址类似于192.168.1.1
- Android学习笔记-Activity&Intent
- Android学习笔记-EditText&TextView&Button&菜单栏
- 笔试题目记录
- Android学习笔记-Activity的生命周期
- Android学习笔记-Activity的布局
- Android学习笔记-常用控件
- Android学习笔记-Handler的使用
- Android学习笔记-SQLite的使用
- Spring4学习笔记-SpringJDBC基本操作(补充)
- Android学习笔记-文件下载