lang.NullPointerException：尝试在空对象引用上调用虚拟方法'int android.view.View.getVisibility（）'
我不知道如何解决
我的课：
public class SimpleCommodityActivity extends BaseActivity {
@BindView(R.id.view_pager_tab)
SmartTabLayout view_pager_tab;
@BindView(R.id.viewpager)
ViewPager viewpager;
@BindView(R.id.img_back)
ImageView img_back;
@BindView(R.id.img_cart)
ImageView img_cart;
@BindView(R.id.txt_badge_shopping_cart)
TextView txt_badge_shopping_cart;
@BindView(R.id.txt_title_commodity)
TextView txt_title_commodity;
@BindView(R.id.layout_loading)
LinearLayout layout_loading;
@BindView(R.id.layout_error)
LinearLayout layout_error;
private String commodityId;
private boolean shouldExecuteOnResume;
@Override
protected int getViewId() {
return R.layout.activity_simple_commodity;
}
@Override
protected void initializeActivity() {
Intent intent = getIntent();
commodityId = intent.getStringExtra("id");
Log.e("id", commodityId);
getData();
getBadge();
shouldExecuteOnResume = false;
txt_title_commodity.setSelected(true);
}
@Override
protected void setupListeners() {
}
@Override
protected void isNetwork(boolean isNetwork) {
}
@Override
protected void onResume() {
super.onResume();
if (shouldExecuteOnResume) {
getData();
getBadge();
} else {
shouldExecuteOnResume = true;
}
}
private void getData() {
layout_loading.setVisibility(View.VISIBLE);
new PakhshiStore().getCommodity(commodityId).subscribe(new DisposableObserver<MainRes<CommodityRes>>() {
@Override
public void onNext(MainRes<CommodityRes> value) {
if (value.getResponseType() != 1) {
showMessage(value.getError());
} else {
CommodityRes commodityRes = value.getData();
if (commodityRes != null) {
//datas = commodityRes;
AppStore.setCommodityData(commodityRes);
setData(commodityRes);
//scrollview.setVisibility(View.VISIBLE);
} else {
layout_loading.setVisibility(View.GONE);
//scrollview.setVisibility(View.GONE);
layout_error.setVisibility(View.VISIBLE);
}
}
}
@Override
public void onError(Throwable e) {
layout_loading.setVisibility(View.GONE);
//scrollview.setVisibility(View.GONE);
layout_error.setVisibility(View.VISIBLE);
}
@Override
public void onComplete() {
layout_loading.setVisibility(View.GONE);
}
});
}
private void setData(CommodityRes commodityRes) {
txt_title_commodity.setText(commodityRes.getTitle());
FragmentPagerItemAdapter adapter = new FragmentPagerItemAdapter(
getSupportFragmentManager(), FragmentPagerItems.with(this)
.add(R.string.buy_commodity, SimpleCommodityFrag.class)
.add(R.string.ommoditi_info, SimpleCommodityFrag.class)
.create());
viewpager.setAdapter(adapter);
view_pager_tab.setViewPager(viewpager);
}
public void getBadge() {
if (AppStore.getToken() != null) {
new PakhshiStore().getCartCount().subscribe(new DisposableObserver<MainRes<Integer>>() {
@Override
public void onNext(MainRes<Integer> value) {
if (value.getResponseType() != 1) {
showMessage(value.getError());
} else {
if (value.getData() != 0) {
txt_badge_shopping_cart.setVisibility(View.VISIBLE);
txt_badge_shopping_cart.setText(String.valueOf(value.getData()));
} else {
txt_badge_shopping_cart.setVisibility(View.GONE);
}
}
}
@Override
public void onError(Throwable e) {
}
@Override
public void onComplete() {
}
});
} else {
txt_badge_shopping_cart.setVisibility(View.GONE);
}
}
public void initSpinnerSize(final int position) {
if (AppStore.getCommodityData().getPackageTiers().size() != 0) {
Bundle bundle = new Bundle();
bundle.putInt("position",position);
FragmentPagerItemAdapter adapter = new FragmentPagerItemAdapter(
getSupportFragmentManager(), FragmentPagerItems.with(this)
.add(R.string.buy_commodity, SimpleCommodityFrag.class,bundle)
.add(R.string.ommoditi_info, SimpleCommodityFrag.class,bundle)
.create());
viewpager.setAdapter(adapter);
view_pager_tab.setViewPager(viewpager);
}
}
}
我的用户界面：
<?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"
android:id="@+id/layout_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/white"
android:layoutDirection="rtl"
android:orientation="vertical">
<RelativeLayout
android:id="@+id/layout_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:background="@color/colorPrimary">
<ImageView
android:id="@+id/img_back"
android:layout_width="@dimen/_40sdp"
android:layout_height="@dimen/_40sdp"
android:layout_alignParentRight="true"
android:padding="@dimen/_15sdp"
android:rotation="180"
android:src="@drawable/ic_back"
android:tint="@color/white" />
<ImageView
android:id="@+id/img_cart"
android:layout_width="@dimen/_40sdp"
android:layout_height="@dimen/_40sdp"
android:layout_alignParentLeft="true"
android:padding="@dimen/_10sdp"
android:src="@drawable/ic_buy"
android:tint="@color/white" />
<TextView
android:id="@+id/txt_badge_shopping_cart"
android:layout_width="@dimen/_15sdp"
android:layout_height="@dimen/_15sdp"
android:layout_alignRight="@id/img_cart"
android:layout_marginTop="@dimen/_5sdp"
android:background="@drawable/red_circle"
android:gravity="center"
android:text="1"
android:textColor="@color/white"
android:textSize="@dimen/font_size_xxsmall" />
<ImageView
android:id="@+id/img_share"
android:layout_width="@dimen/_40sdp"
android:layout_height="@dimen/_40sdp"
android:layout_toRightOf="@id/img_cart"
android:padding="@dimen/_10sdp"
android:src="@drawable/ic_share"
android:tint="@color/white"
android:visibility="gone" />
<TextView
android:id="@+id/txt_title_commodity"
android:layout_width="wrap_content"
android:layout_height="@dimen/_40sdp"
android:layout_marginLeft="@dimen/_3sdp"
android:layout_marginRight="@dimen/_3sdp"
android:layout_toLeftOf="@id/img_back"
android:layout_toRightOf="@id/img_cart"
android:ellipsize="marquee"
android:fadingEdge="horizontal"
android:gravity="center"
android:marqueeRepeatLimit="marquee_forever"
android:scrollHorizontally="true"
android:singleLine="true"
android:textColor="@color/white"
android:textSize="@dimen/font_size_small" />
</RelativeLayout>
<com.ogaclejapan.smarttablayout.SmartTabLayout
android:id="@+id/view_pager_tab"
android:layout_alignParentBottom="true"
android:layout_width="match_parent"
android:layout_height="@dimen/_40sdp"
android:background="@color/colorAccent"
app:stl_clickable="true"
app:stl_customTabTextLayoutId="@layout/custom_tab"
app:stl_customTabTextViewId="@id/txt"
app:stl_defaultTabBackground="?attr/selectableItemBackground"
app:stl_defaultTabTextAllCaps="true"
app:stl_defaultTabTextColor="@color/colorAccent"
app:stl_defaultTabTextHorizontalPadding="16dp"
app:stl_defaultTabTextMinWidth="0dp"
app:stl_defaultTabTextSize="@dimen/font_size_xlarge"
app:stl_distributeEvenly="false"
app:stl_dividerColor="@color/transparent"
app:stl_dividerThickness="@dimen/_1sdp"
app:stl_drawDecorationAfterTab="false"
app:stl_indicatorColor="@color/black_30"
app:stl_indicatorCornerRadius="@dimen/_18sdp"
app:stl_indicatorGravity="center"
app:stl_indicatorInterpolation="smart"
app:stl_indicatorThickness="@dimen/_30sdp"
app:stl_titleOffset="24dp"
app:stl_underlineThickness="1dp" />
<android.support.v4.view.ViewPager
android:id="@+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@id/layout_title" />
<LinearLayout
android:id="@+id/layout_loading"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/background_color"
android:gravity="center"
android:orientation="vertical"
android:visibility="gone">
<ImageView
android:layout_width="@dimen/_100sdp"
android:layout_height="@dimen/_100sdp"
android:alpha="0.3"
android:src="@drawable/logo" />
<com.github.ybq.android.spinkit.SpinKitView
style="@style/SpinKitView.Large.ThreeBounce"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
app:SpinKit_Color="@color/gray_hint" />
</LinearLayout>
<LinearLayout
android:id="@+id/layout_error"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/background_color"
android:gravity="center"
android:orientation="vertical"
android:visibility="gone">
<ImageView
android:layout_width="@dimen/_80sdp"
android:layout_height="@dimen/_80sdp"
android:alpha="0.5"
android:src="@drawable/ic_warning" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/_10sdp"
android:gravity="center"
android:text="@string/error_commodity_not_found"
android:textColor="@color/colorPrimaryDark"
android:textSize="@dimen/font_size_normal" />
</LinearLayout>
</RelativeLayout>
错误：
java.lang.NullPointerException：尝试在空对象引用上调用虚拟方法'int android.view.View.getVisibility（）'
我真的不知道这是什么错误 我删除片段适配器，再次显示此错误
日志：
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.pakhshi.app.pakhshi, PID: 28599
java.lang.NullPointerException: Attempt to invoke virtual method 'int android.view.View.getVisibility()' on a null object reference
at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1623)
at android.view.View.measure(View.java:23297)
at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:715)
at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:461)
at android.view.View.measure(View.java:23297)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6928)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
at android.support.v7.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:141)
at android.view.View.measure(View.java:23297)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6928)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1514)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:806)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:685)
at android.view.View.measure(View.java:23297)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6928)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
at android.view.View.measure(View.java:23297)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6928)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1514)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:806)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:685)
at android.view.View.measure(View.java:23297)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6928)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
at com.android.internal.policy.DecorView.onMeasure(DecorView.java:899)
at android.view.View.measure(View.java:23297)
at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2837)
at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1874)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2129)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1743)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7773)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:911)
at android.view.Choreographer.doCallbacks(Choreographer.java:723)
at android.view.Choreographer.doFrame(Choreographer.java:658)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:897)
at android.os.Handler.handleCallback(Handler.java:789)
at android.os.Handler.dispatchMessage(Handler.java:98)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6949)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374)