Zafar Kurbonov Zafar Kurbonov - 1 month ago 11
Android Question

Android - Popup window crashing

Searched for many solution in the stackoverflow community, but none solves my problem: I have a

button
in
Main.java
activity, when
button
is clicked, the popup menu does not show and the whole app is crashed.

Here is my code:

Button _buyurtmaYaratish = (Button) findViewById(R.id.btn_buyurtma_berish);
_buyurtmaYaratish.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
LayoutInflater layoutInflater = (LayoutInflater) getBaseContext().getSystemService(LAYOUT_INFLATER_SERVICE);
View popupView = layoutInflater.inflate(R.layout.popup_menu, null);
final PopupWindow popupWindow = new PopupWindow(popupView, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);

Button btnPopup = (Button) findViewById(R.id.btn_popup);
btnPopup.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
popupWindow.dismiss();
}
});
popupWindow.showAsDropDown(btnPopup, 50, -30);
}
});


My Main.xml code:

<RelativeLayout.......

<Button
android:id="@+id/btn_buyurtma_berish"
android:layout_width="250dp"
android:layout_height="wrap_content"
android:text="@string/buyurtma_berish"
android:background="@drawable/button_kirish"
android:textSize="18sp"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp"
android:textColor="@color/white"
android:layout_below="@+id/edtx_summa_miqdori"/>

</RelativeLayout>


My popup.xml code:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/rl"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center">
<TextView
android:id="@+id/txt_kk_mas_popup"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/aloqaga_chiqamiz"
android:layout_centerHorizontal="true"
android:textSize="18sp"
android:layout_marginTop="30dp"
android:textColor="@color/black"/>
<Button
android:layout_width="280dp"
android:layout_height="wrap_content"
android:background="@drawable/button_kirish"
android:text="@string/tasdiqlash"
android:textColor="@color/white"
android:textSize="19sp"
android:id="@+id/btn_popup"
android:layout_below="@+id/txt_kk_mas_popup"
android:layout_centerHorizontal="true"
android:layout_marginTop="25dp" />
</RelativeLayout>


What Am I doing wrong?

java.lang.NullPointerException
at datasite.com.aroba.DelHome$2.onClick(DelHome.java:49)
at android.view.View.performClick(View.java:4192)
at android.view.View$PerformClick.run(View.java:17248)
at android.os.Handler.handleCallback(Handler.java:615)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4950)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:997)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:764)
at dalvik.system.NativeStart.main(Native Method)


This is highlighted red in the Logcat when I try to click
button

Answer Source

change this :-> Button btnPopup = (Button) findViewById(R.id.btn_popup);

with this :-> Button btnPopup = (Button) popupView.findViewById(R.id.btn_popup); in your code

like below code

     Button _buyurtmaYaratish = (Button) findViewById(R.id.btn_buyurtma_berish);
    _buyurtmaYaratish.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            LayoutInflater layoutInflater = (LayoutInflater) getBaseContext().getSystemService(LAYOUT_INFLATER_SERVICE);
            View popupView = layoutInflater.inflate(R.layout.popup_menu, null);
            final PopupWindow popupWindow = new PopupWindow(popupView, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);

Button btnPopup = (Button) popupView.findViewById(R.id.btn_popup);
                btnPopup.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View view) {
                        popupWindow.dismiss();
                    }
                });
                popupWindow.showAsDropDown(btnPopup, 50, -30);
            }
        });