摘要：
添加一个数组 @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); button = (Button) findViewB... 阅读全文
摘要：
private Button button; private final CharSequence items[] = { "北京", "上海", "广州" }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);... 阅读全文
摘要：
private Button button; private final CharSequence[] items = { "北京", "上海", "广州" }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);... 阅读全文
摘要：
private Button button; private final CharSequence[] items = { "北京", "上海", "广州" }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);... 阅读全文
摘要：
@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); button = (B 阅读全文
摘要：
@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); button = (Button) this.findViewBy... 阅读全文
摘要：
public class MainActivity extends Activity { private Button button; private ActionMode actionMode; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(save... 阅读全文
摘要：
public class MainActivity extends Activity { private ListView listView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setCon... 阅读全文