请耐心等待,因为这是我的第一款应用。我的应用程序不是太革命性的,但我想通过实现一些自定义选择器使其更加用户友好。例如,日期选择器使用日历视图或水平流动的类似微调器的选择器(非常类似于SetCPU)。不幸的是,我甚至不知道从哪里开始构建这样的自定义ui组件。
答案 0 :(得分:4)
我想下面的框架代码可以帮助您在应用程序中提供一些所需的灵活性。
/* Simple Dialog
Dialog dialog = new Dialog(this);
dialog.setTitle("Hello");
dialog.show();
*/
/* Inflating an layout as the Dialog
Dialog loginDialog = new Dialog(this);
View layout = LayoutInflater.from(this).inflate(R.layout.login, null);
loginDialog.setContentView(layout);
Button btn = (Button)(layout.findViewById(R.id.button1));
final EditText txt = (EditText) layout.findViewById(R.id.editText1);
btn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
//Toast.makeText(getApplicationContext(), txt.getText().toString(), Toast.LENGTH_SHORT).show();
txt.setText("Ahmedabad");
}
});
loginDialog.show();
/* ProgreessBar Dialog (you need to implement thread)
ProgressDialog dialog = new ProgressDialog(this);
dialog.setProgressStyle(2);
dialog.show();
*/
/* Alert Dialog to alert a mesage or an error or customize exception like Enter the field, etc.
AlertDialog dialog = new AlertDialog.Builder(this).create();
dialog.setMessage("Message");
dialog.setIcon(R.drawable.ic_launcher);
dialog.setTitle("Done");
dialog.show();
*/
/* ------------------- Binding array items into the spinner ---------------------------
sp = (Spinner)findViewById(R.id.spinner1);
String bloodgroups[]={
"A +ve","B +ve","O +ve","AB +ve","A -ve","B -ve","O -ve","AB -ve"
};
ArrayAdapter<String> adapter=new ArrayAdapter<String>(this,android.R.layout .simple_spinner_dropdown_item,bloodgroups);
sp.setAdapter(adapter);
*/
/* DatePicker Dialog Code: I have used a button whose click event bring datepicker dialog into focus
Button btnselDate = (Button)findViewById(R.id.btnseldate); // date select button
// ----------------------------- DATE PICKER DIALOG PROMPT ---------------------
btnselDate.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
// TODO Auto-generated method stub
showDialog(1);
}
});
@Override
protected Dialog onCreateDialog(int id) {
DatePickerDialog dialog = new DatePickerDialog(this, new OnDateSetListener()
{
public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth)
{
((EditText)findViewById(R.id.txtdate)).setText(dayOfMonth + "/" + monthOfYear + "/" + year);
}
}, new GregorianCalendar().get(Calendar.YEAR), new GregorianCalendar().get(Calendar.MONTH), new GregorianCalendar().get(Calendar.DAY_OF_MONTH));
return dialog;
}
*/
答案 1 :(得分:2)
Android的默认小部件很简单,但通过混合它们,您可以构建自己的自定义小部件。 Read more about this here.
答案 2 :(得分:0)
创建一个扩展View的自定义类。然后,您可以设置大小并控制在“画布”上绘制的内容以及它将如何响应触摸事件。关于创建“小部件”有很多例子。 Reto Meiers的书就是他创造指南针的好例子。
答案 3 :(得分:0)
http://mindtherobot.com/blog/272/android-custom-ui-making-a-vintage-thermometer/