纸玫瑰

摘要： public class MainActivity extends Activity implements View.OnClickListener{ private ProgressBar progress; private Button add; private Button ... 阅读全文

摘要： public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceS... 阅读全文

摘要： public class MainActivity extends AppCompatActivity { private TextView text; private Spinner spinner; private SimpleAdapter adapter; priva... 阅读全文

摘要： 下拉菜单 Spinner 简单纯字符串版public class MainActivity extends Activity implements AdapterView.OnItemSelectedListener{ private Spinner spinner; private T... 阅读全文

摘要： @Override public void onItemSelected(AdapterView parent, View view, int position, long id) {方法1：通过ArrayAdapter 提供的getItem（position） 直接获取位置内容 ... 阅读全文

摘要： 与ListView一维排布相对public class MainActivity extends Activity implements AdapterView.OnItemClickListener{ private GridView gv; private int[] icon = ... 阅读全文

摘要： DatePickerDialog 的监听 new DatePickerDialog(this, new DatePickerDialog.OnDateSetListener() { @Override public void onDateS... 阅读全文

摘要： public class MainActivity extends AppCompatActivity { private TimePicker timePicker; private DatePicker datePicker; private Calendar cal; ... 阅读全文

摘要： protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ... 阅读全文

摘要： //Toast.makeText(上下文，内容，显示时间);Toast toast =Toast.makeText(this,"位置="+position+"内容="+text,Toast.LENGTH_SHORT);//在屏幕中显示的位置，X轴的相对偏移，Y轴的相对偏移toast.setGravi... 阅读全文