在下面的代码中,如何关闭警告框?我不想导致内存泄漏。我在alertDialog上尝试了.dismiss(),但是没有用...... 感谢
// User pressed the stop button
public void StopMsg_button_action(View view){
final EditText password_input = new EditText(this); // create an text input field
password_input.setHint("Enter Password"); // put a hint in it
password_input.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD); // change it to password type
AlertDialog.Builder alertDialog = new Builder(this); // create an alert box
alertDialog.setTitle("Enter Password"); // set the title
alertDialog.setView(password_input); // insert the password text field in the alert box
alertDialog.setPositiveButton("OK", new DialogInterface.OnClickListener() { // define the 'OK' button
public void onClick(DialogInterface dialog, int which) {
String entered_password = password_input.getText().toString();
if (entered_password.equals(my_password)) {
locManager.removeUpdates(locListener); // stop listening for GPS coordinates
startActivity(new Intent(Emergency_1Activity.this,Main_MenuActivity.class)); // go to main menu
} else {
alert("Incorrect Password");
}
}
});
alertDialog.setNeutralButton("Cancel", new DialogInterface.OnClickListener() { // define the 'Cancel' button
public void onClick(DialogInterface dialog, int which) {
}
});
alertDialog.show(); // show the alert box
}
答案 0 :(得分:45)
什么对dismiss()不起作用?
您应该能够使用Dialog.dismiss()或Dialog.cancel()
alertDialog.setNeutralButton("Cancel", new DialogInterface.OnClickListener() { // define the 'Cancel' button
public void onClick(DialogInterface dialog, int which) {
//Either of the following two lines should work.
dialog.cancel();
//dialog.dismiss();
}
});
答案 1 :(得分:36)
使用以下代码,您可以显示ListBox AlertDialog,当您按下某个项目时,您将关闭该对话框。代码的顺序是importan。
AlertDialog.Builder alertDialog = new AlertDialog.Builder(mContext);
String names[] ={"A","B","C","D"};
ArrayAdapter<String> adapter = new ArrayAdapter<String>(mContext,android.R.layout.simple_list_item_1,names);
LayoutInflater inflater = getLayoutInflater();
View convertView = (View)inflater.inflate(R.layout.list_layout, null);
ListView lv = (ListView) convertView.findViewById(R.id.listView1);
lv.setAdapter(adapter);
alertDialog.setView(convertView);
alertDialog.setTitle("List");
final AlertDialog ad = alertDialog.show();
lv.setOnItemClickListener(new AdapterView.OnItemClickListener()
{
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id)
{
//Toast.makeText(mContext, position, Toast.LENGTH_LONG).show();
ad.dismiss();
}
});
答案 2 :(得分:22)
代码非常简单:
final AlertDialog show = alertDialog.show();
最后在按钮的操作中例如:
show.dismiss();
例如使用自定义alertdialog:
java上的代码,你可以创建一个Object AlertDialog:
public class ViewAlertRating {
Context context;
public ViewAlertRating(Context context) {
this.context = context;
}
public void showAlert(){
AlertDialog.Builder alertDialog = new AlertDialog.Builder(context);
LayoutInflater inflater = ((Activity) context).getLayoutInflater();
View alertView = inflater.inflate(R.layout.layout_test, null);
alertDialog.setView(alertView);
final AlertDialog show = alertDialog.show();
Button alertButton = (Button) alertView.findViewById(R.id.btn_test);
alertButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
show.dismiss();
}
});
}
}
代码XML layout_test.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Valoración"
android:id="@+id/text_test1"
android:textSize="20sp"
android:textColor="#ffffffff"
android:layout_centerHorizontal="true"
android:gravity="center_horizontal"
android:textStyle="bold"
android:paddingTop="10dp"
android:paddingBottom="10dp"
android:background="#ff37dabb"
android:paddingLeft="20dp"
android:paddingRight="20dp" />
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingLeft="20dp"
android:paddingRight="20dp"
android:layout_marginTop="15dp">
<EditText
android:layout_width="match_parent"
android:layout_height="120dp"
android:id="@+id/edit_test"
android:hint="Descripción"
android:textColor="#aa000000"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:textColorHint="#aa72777a"
android:gravity="top" />
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_horizontal"
android:paddingTop="10dp"
android:paddingLeft="15dp"
android:paddingRight="15dp"
android:paddingBottom="15dp" >
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:weightSum="1.00"
android:gravity="right" >
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Enviar"
android:id="@+id/btn_test"
android:gravity="center_vertical|center_horizontal"
android:textColor="#ffffffff"
android:background="@drawable/btn_flat_blue_selector" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
</LinearLayout>
最后,请调用Activity:
ViewAlertRating alertRating = new ViewAlertRating(this);
alertRating.showAlert();
答案 3 :(得分:14)
如果您不想放置任何按钮并且您具有自定义布局,您必须使用这种方式,并且您想要在单击该文本视图时关闭警报对话框:
AlertDialog alertDialog = builder.show();
然后检查
if(alertDialog != null && alertDialog.isShowing()){
alertDialog.dismiss();
}
如果您想在检查某些条件后将其关闭到活动中的其他位置,也是如此。
答案 4 :(得分:9)
这个方法演示了所需的代码......来自Namrata之前的回答
@SuppressLint("InflateParams")
private static void showDialog(Activity activity, int layoutId)
{
LayoutInflater inflater = activity.getLayoutInflater();
View dialoglayout = inflater.inflate(layoutId, null);
AlertDialog.Builder builder = new AlertDialog.Builder(activity);
builder.setView(dialoglayout);
CustomDialog.doCustomLogic(activity, layoutId, dialoglayout);
final AlertDialog alertDialog = builder.show();
// caller assumes there will be a btn_close element present
Button closeNowBtn = (Button) dialoglayout.findViewById(R.id.btn_close);
closeNowBtn.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
alertDialog.dismiss();
}
});
}
答案 5 :(得分:3)
只需覆盖create方法并保存对话框实例。然后你可以打电话给解雇
@Override
public AlertDialog create() {
this.dialog = super.create();
return this.dialog;
}
代码的某处:
dialog.dismiss();
答案 6 :(得分:3)
解雇或取消AlertDialog.Builder
dialog.setNegativeButton("إلغاء", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
dialogInterface.dismiss()
}
});
您必须在对话框界面上调用dismiss()
。
答案 7 :(得分:1)
而不是alertDialog.setNeutralButton
只使用alertDialog.setNegativeButton
。使用dialog.cancel()
,因为dialog.dismiss()
不是可用于“警告”对话框的方法。
答案 8 :(得分:0)
我试过这个并且工作了!
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
alertDialog.setCancelable(true);
}
});