标签：android style blog http io color ar os java
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<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> |
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<?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> |
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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() { @Override public void onClick(View v) { // TODO Auto-generated method stub String 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); }} |
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public class ResultActivity extends Activity{ private TextView result; @Override protected 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 + ""); }} |
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<?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> |
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<activity android:name=".ResultActivity" android:label="ResultActivity"/> |
Android学习笔记-EditText&TextView&Button&菜单栏
标签：android style blog http io color ar os java
原文地址：http://blog.csdn.net/dyllove98/article/details/41051001
