在stackoverflow社區中搜索了很多解決方案,但沒有解決我的問題:我在Main.java
活動中有button
活動,單擊button
時,彈出菜單不顯示,整個應用程序崩潰。安卓 - 彈出式窗口崩潰
這裏是我的代碼:
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);
}
});
我的main.xml代碼:
<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>
我popup.xml代碼:
<?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>
我在做什麼錯了?
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)
這當我嘗試點擊button
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你可以發佈什麼錯誤,你在堆棧跟蹤 – Praneeth