本章学习要点：
//==: Alert Dialog
void showAlertDialog() {
final Builder builder = new AlertDialog.Builder(this);
builder.setTitle("AlertDialog");
builder.setMessage("This is a alert message!");
builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
});
builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
});
AlertDialog alertDialog = builder.create();
alertDialog.show();
}
//==: Option Alert Dialog
void showOptionDialog() {
final String[] items = {"Apple", "Banana", "Pear", "Tomato" };
final AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Which fruit do you like?");
builder.setSingleChoiceItems(items, 0, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
StringBuilder sb = new StringBuilder();
sb.append(items[which]);
sb.append(" is very good!");
Toast toast = Toast.makeText(getApplicationContext(), sb.toString(), Toast.LENGTH_SHORT);
toast.show();
}
});
builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
return;
}
});
AlertDialog alertDialog = builder.create();
alertDialog.show();
}
//==: Toast Dialog
void showToastDialog() {
Toast toast = Toast.makeText(getApplicationContext(), "This is a toast dialog", Toast.LENGTH_LONG);
toast.show();
}