Android 中日期控件与下拉列表的使用
1、在一个EditText 中单击一下可以弹出日期对话框：
private static int START;
private int mYear;
private int mMonth;
private int mDay; private class SetParaImpl implements OnClickListener {
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.start_time:
START = 1;
new DatePickerDialog(MainActivity.this, mDateSetListener, mYear, mMonth, mDay).show();
break;
case R.id.end_time:
START = 2;
new DatePickerDialog(MainActivity.this, mDateSetListener, mYear, mMonth, mDay).show();
break;
case R.id.set_param:
startActivity(new Intent(MainActivity.this, EnvironmentSetActivity.class));
break;
case R.id.query:
startActivity(new Intent(MainActivity.this, AchartengineActivity.class));
break;
default:
break;
}
}
} private DatePickerDialog.OnDateSetListener mDateSetListener = new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
mYear = year;
mMonth = monthOfYear;
mDay = dayOfMonth;
if (START == 1) {
JavaUtils.updateDisplay(START, startTime, mYear, mMonth, mDay);
} else if (START == 2) {
JavaUtils.updateDisplay(START, endTime, mYear, mMonth, mDay);
}
}
};2、
public class JavaUtils {
public static void updateDisplay(int start, EditText view, int mYear, int mMonth, int mDay) {
if (start == 1) {
view.setText(new StringBuilder().append(mYear).append("-").append((mMonth + 1) < 10 ? "0" + (mMonth + 1) : (mMonth + 1)).append("-").append((mDay + 1) < 10 ? "0" + (mDay) : (mDay)));
} else {
view.setText(new StringBuilder().append(mYear).append("-").append((mMonth + 1) < 10 ? "0" + (mMonth + 1) : (mMonth + 1)).append("-").append((mDay + 1) < 10 ? "0" + (mDay) : (mDay)));
}
}
}3、下拉列表的使用：
condition = (Spinner) view.findViewById(R.id.condition);
adapterItem = ArrayAdapter.createFromResource(GreenHouseActivity.this, R.array.condition, android.R.layout.simple_spinner_item); // 从资源文件中读取选项内容
adapterItem.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); // 设置列表显示风格
condition.setAdapter(adapterItem); // 设置下拉列表选项
condition.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView parent, View view, int position, long id) {
android.util.Log.d("mark", "p=" + position);
}
@Override
public void onNothingSelected(AdapterView parent) {
// TODO Auto-generated method stub
}
});note：R.array.condition 放置在values 文件下的array.xml 中：
- 月
- 周
- 天
- 6小时
自定义下拉列表：
private void homeSeceneMode() {
ArrayAdapter adapterMode = null; // 下拉列表内容适配器
List data = new CURDTable(this).allSeceneMode();
if (data != null) {
adapterMode = new ArrayAdapter(this, android.R.layout.simple_spinner_item, data);
adapterMode.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); // 设置下拉列表显示风格
this.homeSeceneMode.setAdapter(adapterMode);
}
} public List allSeceneMode() {
db = this.helper.getReadableDatabase();
List info = new ArrayList();
String sql = "select name from secene_mode_tb";
Cursor cursor = db.rawQuery(sql, null);
while (cursor.moveToNext()) {
info.add(cursor.getString(cursor.getColumnIndex("name")));
}
db.close();
return info;
}