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问题描述
我有进行一些验证(下图)的对话框。你的问题是,在显示吐司之后被驳回的对话,没有我呼吁解雇。我需要显示敬酒,并保持该对话框打开来纠正错误。
最后的EditText txtName的=新的EditText(本);
AlertDialog.Builder dlgAdd =新AlertDialog.Builder(本)
.setTitle(R.string.create_category)
.setMessage(R.string.name)
.setView(txtName的)
.setPositiveButton(R.string.ok,新OnClickListener(){
@覆盖
公共无效的onClick(DialogInterface对话,诠释它){
字符串newCatName = txtName.getText()的toString()修剪()。 //的getText的值转换为字符串。
如果(newCatName = NULL和放大器;!&安培; newCatName .length()== 0)
{
Toast.makeText(ManageCategories.this,R.string.err_name_required,3500).show();
} 其他 {
尝试 {
布尔alreadyExists = mDatabaseAdapter.getCategoryIDs(newCatName).length> 0; //猫这个名字IDS
如果(alreadyExists){
Toast.makeText(ManageCategories.this,R.string.categoryAlreadyExists,3500).show();
} 其他 {
mDatabaseAdapter.addCategory(newCatName);
}
}赶上(例外前){
Toast.makeText(ManageCategories.this,R.string.error +:+ ex.getLocalizedMessage(),3500).show();
}
}
}
})。setNegativeButton(R.string.cancel,新DialogInterface.OnClickListener(){
公共无效的onClick(DialogInterface对话框,INT ID){
dialog.cancel();
}
});
dlgAdd.show();
解决方案
我的猜测是,你没有创建和显示对话框中提到了Android文档这里的使用OnCreateDialog功能
请做中提到的文档,并让我们知道,如果它仍然无法正常工作。
I have a dialog which performs some validation (below). Thee problem is, the dialog is dismissed after the Toast is displayed, without me calling dismiss. I need to show the toast and keep the dialog open to correct the error.
final EditText txtName = new EditText(this);
AlertDialog.Builder dlgAdd = new AlertDialog.Builder(this)
.setTitle(R.string.create_category)
.setMessage(R.string.name)
.setView(txtName)
.setPositiveButton(R.string.ok, new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
String newCatName = txtName.getText().toString().trim(); // Converts the value of getText to a string.
if (newCatName != null && newCatName .length() ==0)
{
Toast.makeText(ManageCategories.this, R.string.err_name_required, 3500).show();
} else {
try {
boolean alreadyExists = mDatabaseAdapter.getCategoryIDs(newCatName).length > 0;// ids of cats with this name
if(alreadyExists) {
Toast.makeText(ManageCategories.this, R.string.categoryAlreadyExists, 3500).show();
} else {
mDatabaseAdapter.addCategory(newCatName);
}
}catch(Exception ex){
Toast.makeText(ManageCategories.this, R.string.error+':'+ ex.getLocalizedMessage(), 3500).show();
}
}
}
}).setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
dlgAdd.show();
解决方案
My guess is that you are not creating and showing dialog as mentioned in the Android docs here http://developer.android.com/guide/topics/ui/dialogs.html using OnCreateDialog functions
Please do as mentioned in the docs and let us know if it still does not work.
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