棉花糖和以下的 API 显示循环依赖错误。相同的布局在棉花糖上方工作正常

Question

我有一个带有底部范围的tablayout片段，其中包含三个片段。每个片段中都有一个回收瓶和一个旋转器。我的takayout fragment xml文件如下

<android.support.constraint.ConstraintLayout 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:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@null">
<!-- TODO: Update blank fragment layout -->
<RelativeLayout
    android:id="@+id/rl"
    android:layout_width="match_parent"
    android:layout_height="0dp"
    app:layout_constraintBottom_toTopOf="@+id/bottom_navigation"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent">
    <CustomWidgets.LockableViewPager
        android:id="@+id/stocksviewpager"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:isScrollContainer="false"
        app:layout_behavior="@string/appbar_scrolling_view_behavior" />
</RelativeLayout>
<android.support.design.widget.BottomNavigationView
    android:id="@+id/bottom_navigation"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:background="?android:attr/windowBackground"
    app:itemBackground="@color/bottomnavigationcolour"
    app:itemIconTint="@drawable/bottomnav_colors"
    app:itemTextColor="@drawable/bottomnav_colors"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:menu="@menu/bottom_navigation_stocks" />
</android.support.constraint.ConstraintLayout>

底部导航视图页面有三个片段。他们的布局如下

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/spinnerlayout">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:id="@+id/spinners"
        android:gravity="center"
        android:background="#2e364c"
        android:weightSum="2"
        android:orientation="horizontal">
        <LinearLayout
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:layout_margin="5dp"
            android:background="@drawable/spinner_background">
            <Spinner
                android:layout_width="match_parent"
                android:layout_height="30dp"
                android:dropDownVerticalOffset="30dp"
                android:focusable="false"
                android:id="@+id/indicesspinner"
                android:entries="@array/indices_array" />
        </LinearLayout>
        <!--android:background="@drawable/spinner_background"-->
        <LinearLayout
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:layout_margin="5dp"
            android:background="@drawable/spinner_background">
            <Spinner
                android:id="@+id/sortbyspinner"
                android:layout_width="match_parent"
                android:layout_height="30dp"
                android:dropDownVerticalOffset="30dp"
                android:entries="@array/sortby_array"/>
        </LinearLayout>
    </LinearLayout>
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:layout_marginLeft="10dp"
        android:layout_marginRight="10dp"
        android:id="@+id/searchbar"
        android:layout_below="@+id/spinners">
        <AutoCompleteTextView
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:hint="Search Symbol"
            android:layout_alignParentLeft="true"
            android:layout_toLeftOf="@+id/searchimage"
            android:id="@+id/autocompletesearch"
            android:layout_alignParentStart="true"
            android:layout_toStartOf="@+id/searchimage" />
        <ImageView
            android:layout_width="30dp"
            android:layout_height="wrap_content"
            android:id="@+id/searchimage"
            android:tint="@color/white"
            android:layout_alignParentRight="true"
            android:src="@drawable/search_two"
            android:layout_alignParentEnd="true" />
    </RelativeLayout>
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="20dp"
        android:layout_below="@+id/searchbar"
        android:background="#4b88e2"
        android:id="@+id/title">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_centerHorizontal="true"
            android:layout_centerVertical="true"
            android:gravity="center"
            android:id="@+id/indexestitletv"
            android:text="textview" />
        <ProgressBar
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/indexesrefreshprogressbar"
            android:layout_alignParentEnd="true"
            android:layout_alignParentRight="true"
            android:layout_marginRight="16dp"
            android:layout_marginEnd="16dp"
            style="?android:attr/progressBarStyleSmall" />
    </RelativeLayout>
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/rvrl"
        android:layout_below="@+id/title" >
        <android.support.v7.widget.RecyclerView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/indexesrecyclerview" />
    </RelativeLayout>
    <!--<ProgressBar
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:id="@+id/progressbar"
        android:visibility="invisible"/>-->
</RelativeLayout>
</RelativeLayout>

每当我从旋转器中更改值并更新recyclerview时，都会向我显示此错误

java.lang.IllegalStateException: Circular dependencies cannot exist in RelativeLayout
                                                                         at android.widget.RelativeLayout$DependencyGraph.getSortedViews(RelativeLayout.java:1724)
                                                                         at android.widget.RelativeLayout.sortChildren(RelativeLayout.java:382)
                                                                         at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:389)
                                                                         at android.view.View.measure(View.java:18788)
                                                                         at android.support.constraint.ConstraintLayout.internalMeasureChildren(ConstraintLayout.java:934)
                                                                         at android.support.constraint.ConstraintLayout.onMeasure(ConstraintLayout.java:973)
                                                                         at android.view.View.measure(View.java:18788)
                                                                         at android.support.v7.widget.RecyclerView$LayoutManager.measureChildWithMargins(RecyclerView.java:8994)
                                                                         at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1585)
                                                                         at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1519)
                                                                         at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:614)
                                                                         at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3812)
                                                                         at android.support.v7.widget.RecyclerView.onMeasure(RecyclerView.java:3225)
                                                                         at android.view.View.measure(View.java:18788)
                                                                         at android.widget.RelativeLayout.measureChild(RelativeLayout.java:676)
                                                                         at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:479)
                                                                         at android.view.View.measure(View.java:18788)
                                                                         at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:715)
                                                                         at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:461)
                                                                         at android.view.View.measure(View.java:18788)
                                                                         at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:715)
                                                                         at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:461)
                                                                         at android.view.View.measure(View.java:18788)
                                                                         at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1632)
                                                                         at android.view.View.measure(View.java:18788)
                                                                         at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:715)
                                                                         at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:461)
                                                                         at android.view.View.measure(View.java:18788)
                                                                         at android.support.constraint.ConstraintLayout.internalMeasureChildren(ConstraintLayout.java:934)
                                                                         at android.support.constraint.ConstraintLayout.onMeasure(ConstraintLayout.java:973)
                                                                         at android.view.View.measure(View.java:18788)
                                                                         at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1632)
                                                                         at android.view.View.measure(View.java:18788)
                                                                         at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:715)
                                                                         at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:461)
                                                                         at android.view.View.measure(View.java:18788)
                                                                         at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951)
                                                                         at android.support.design.widget.CoordinatorLayout.onMeasureChild(CoordinatorLayout.java:739)
                                                                         at android.support.design.widget.HeaderScrollingViewBehavior.onMeasureChild(HeaderScrollingViewBehavior.java:91)
                                                                         at android.support.design.widget.AppBarLayout$ScrollingViewBehavior.onMeasureChild(AppBarLayout.java:1361)
                                                                         at android.support.design.widget.CoordinatorLayout.onMeasure(CoordinatorLayout.java:809)
                                                                         at android.view.View.measure(View.java:18788)
                                                                         at android.support.v4.widget.DrawerLayout.onMeasure(DrawerLayout.java:1059)
                                                                         at android.view.View.measure(View.java:18788)
                                                                         at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951)
                                                                         at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
                                                                         at android.support.v7.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:141)
                                                                         at android.view.View.measure(View.java:18788)
                                                                         at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951)
                                                                         at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1465)
                                                                         at android.widget.LinearLayout.measureVertical(LinearLayout.java:748)
                                                                         at android.widget.LinearLayout.onMeasure(LinearLayout.java:630)
                                                                         at android.view.View.measure(View.java:18788)
                                                                         at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951)
                                                                        at android.widget

但是，我在两个布局中都看不到任何循环引用。请注意，相同的布局在牛轧糖及以上正在使用。我似乎不明白是什么原因引起的。这是我的Java课程，我在其中更新旋转器和recyclerview

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    View rootView =  inflater.inflate(R.layout.fragment_indexes, container, false);
    indicesSpinner = rootView.findViewById(R.id.indicesspinner);
    sortBySpinner = rootView.findViewById(R.id.sortbyspinner);
    titleTextView = rootView.findViewById(R.id.indexestitletv);
    indexFragmentCreated = true;
    autoCompleteTextView = rootView.findViewById(R.id.autocompletesearch);
    autoCompleteTextView.setThreshold(1);
    autoCompleteTextView.setFocusable(true);
    autoCompleteTextView.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_FLAG_CAP_CHARACTERS);
    ArrayAdapter<String> indicesAdapter = new ArrayAdapter<>(getContext(), R.layout.spinner_dropdown_view,
            R.id.spinnerddtext, getResources().getStringArray(R.array.indices_array));
    //indicesAdapter.setDropDownViewResource(R.layout.spinner_dropdown_view);
    indicesSpinner.setAdapter(indicesAdapter);
    indicesSpinner.setSelection(0);
    indicesSpinner.setOnItemSelectedListener(this);
    ArrayAdapter<String> sortbyAdapter = new ArrayAdapter<>(getContext(), R.layout.spinner_dropdown_view,
            R.id.spinnerddtext, getResources().getStringArray(R.array.sortby_array));
    //sortbyAdapter.setDropDownViewResource(R.layout.spinner_dropdown_view);
    sortBySpinner.setAdapter(sortbyAdapter);
    sortBySpinner.setSelection(0);
    sortBySpinner.setOnItemSelectedListener(this);
    indexesRecyclerView = rootView.findViewById(R.id.indexesrecyclerview);
    indexesRecyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
    refreshProgressBar = rootView.findViewById(R.id.indexesrefreshprogressbar);
    refreshProgressBar.setVisibility(View.INVISIBLE);
    /*indexesRecyclerView.addOnItemTouchListener(new RecyclerViewTouchListener(getContext(), indexesRecyclerView, new ClickListener() {
        @Override
        public void onClick(View view, int position) {
            Intent intent = new Intent(getContext(), SymbolStatsActivity.class);
            startActivity(intent);
        }
        @Override
        public void onLongClick(View view, int position) {
        }
    }));*/
    progressBar = rootView.findViewById(R.id.progressbar);
    //symbolDetailsHandler.postDelayed(symbolDetailsRunnable, AppConfig.symbolDetailsMaximumTimer);
    //new GetAllSymbols().execute();
    return rootView;
}
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
    switch (parent.getId()) {
        case R.id.indicesspinner:
            String selectedItem = parent.getItemAtPosition(position).toString();
            switch (selectedItem) {
                case "KSE 100": {
                    spinnerSelectedItem = "100Index";
                    sortBySpinner.setSelection(0);
                    titleTextView.setText(indicesSpinner.getSelectedItem().toString());
                    if (indexFragmentCreated) {     //to prevent web request to be executed even when the user is not on screen
                        indexFragmentCreated = false;
                        return;
                    }
                    //stop continuously running handler
                    //symbolDetailsHandler.removeCallbacks(symbolDetailsRunnable);
                    //stop http request
                    if (myTask != null)
                        myTask.cancel(true);
                    if (checkDataInLocalDB()) {
                        startHandler();
                    }
                    else {
                        new GetIndexSymbols().execute();
                    }
                    /*//Retrieving stored list from sqlite
                    DatabaseHandler databaseHandler = new DatabaseHandler(getContext());
                    Cursor cursor = databaseHandler.getStocksSymbols(spinnerSelectedItem);
                    if (cursor != null && cursor.moveToFirst()) {
                        listSavedTime = cursor.getLong(0);
                        Gson gson = new Gson();
                        Type type = new TypeToken<ArrayList<StocksBean>>() {}.getType();
                        stocksIndicesBeanList = new ArrayList<>();
                        stocksIndicesBeanList = gson.fromJson(cursor.getString(1), type);
                        Collections.sort(stocksIndicesBeanList, new Comparator<StocksBean>() {
                            @Override
                            public int compare(StocksBean stocksBean1, StocksBean stocksBean2) {
                                return stocksBean1.getSymbolCode().compareToIgnoreCase(stocksBean2.getSymbolCode());
                            }
                        });
                        adapter = new StocksRvAdapter(getContext(), stocksIndicesBeanList, "indexes");
                        indexesRecyclerView.setAdapter(adapter);
                        adapter.notifyDataSetChanged();
                        symbolDetailsHandler.postDelayed(symbolDetailsRunnable, AppConfig.symbolDetailsMaximumTimer);
                    }
                    else {
                        myTask = new GetIndexSymbols().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, spinnerSelectedItem);
                        symbolDetailsHandler.postDelayed(symbolDetailsRunnable, AppConfig.symbolDetailsMaximumTimer);
                    }*/
                    break;
                }
                /*case "KSE All":
                    spinnerSelectedItem = "AllShr";
                    StocksRvAdapter allAdapter = new StocksRvAdapter(getContext(), Logs.scripListAll, null, "KSEALL");
                    indexesRecyclerView.setAdapter(allAdapter);
                    allAdapter.notifyDataSetChanged();
                    Toast.makeText(getContext(), Logs.scripListAll.size() + " items", Toast.LENGTH_LONG).show();
                    break;*/
                case "KSE 30": {
                    spinnerSelectedItem = "30Index";
                    sortBySpinner.setSelection(0);
                    titleTextView.setText(indicesSpinner.getSelectedItem().toString());
                    //symbolDetailsHandler.removeCallbacks(symbolDetailsRunnable);
                    //myTask.cancel(true);
                    if (checkDataInLocalDB()) {
                        startHandler();
                    }
                    else {
                        new GetIndexSymbols().execute();
                    }
                    /*//Retrieving stored list from sqlite
                    DatabaseHandler databaseHandler = new DatabaseHandler(getContext());
                    Cursor cursor = databaseHandler.getStocksSymbols(spinnerSelectedItem);
                    if (cursor != null && cursor.moveToFirst()) {
                        listSavedTime = cursor.getLong(0);
                        Gson gson = new Gson();
                        Type type = new TypeToken<ArrayList<StocksBean>>() {}.getType();
                        stocksIndicesBeanList = new ArrayList<>();
                        stocksIndicesBeanList = gson.fromJson(cursor.getString(1), type);
                        Collections.sort(stocksIndicesBeanList, new Comparator<StocksBean>() {
                            @Override
                            public int compare(StocksBean stocksBean1, StocksBean stocksBean2) {
                                return stocksBean1.getSymbolCode().compareToIgnoreCase(stocksBean2.getSymbolCode());
                            }
                        });
                        adapter = new StocksRvAdapter(getContext(), stocksIndicesBeanList, "indexes");
                        indexesRecyclerView.setAdapter(adapter);
                        adapter.notifyDataSetChanged();
                        symbolDetailsHandler.postDelayed(symbolDetailsRunnable, AppConfig.symbolDetailsMaximumTimer);
                    }
                    else {
                        myTask = new GetIndexSymbols().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, spinnerSelectedItem);
                        symbolDetailsHandler.postDelayed(symbolDetailsRunnable, AppConfig.symbolDetailsMaximumTimer);
                    }*/
                    break;
                }
                case "KMI 30": {
                    spinnerSelectedItem = "KMI30Index";
                    sortBySpinner.setSelection(0);
                    titleTextView.setText(indicesSpinner.getSelectedItem().toString());
                    //symbolDetailsHandler.removeCallbacks(symbolDetailsRunnable);
                    //myTask.cancel(true);
                    if (checkDataInLocalDB()) {
                        startHandler();
                    }
                    else {
                        new GetIndexSymbols().execute();
                    }
     }
  }
}
public boolean checkDataInLocalDB() {
    //Retrieving stored list from sqlite
    DatabaseHandler databaseHandler = new DatabaseHandler(getContext());
    Cursor cursor = databaseHandler.getStocksSymbols(spinnerSelectedItem);
    if (cursor != null && cursor.moveToFirst()) {
        listSavedTime = cursor.getLong(0);
        Gson gson = new Gson();
        Type type = new TypeToken<ArrayList<StocksBean>>() {}.getType();
        //stocksIndicesBeanList = new ArrayList<>();
        stocksIndicesBeanList = gson.fromJson(cursor.getString(1), type);
        Collections.sort(stocksIndicesBeanList, new Comparator<StocksBean>() {
            @Override
            public int compare(StocksBean stocksBean1, StocksBean stocksBean2) {
                return stocksBean1.getSymbolCode().compareToIgnoreCase(stocksBean2.getSymbolCode());
            }
        });
        adapter = new StocksRvAdapter(getContext(), stocksIndicesBeanList, "indexes");
        indexesRecyclerView.setAdapter(adapter);
        adapter.notifyDataSetChanged();
        return true;
    }
    else {
        return false;
    }
}

这是我的build.gradle文件

apply plugin: 'com.android.application'
android {
compileSdkVersion 26
buildToolsVersion '26.0.3'
defaultConfig {
    applicationId "com.example.abc"
    minSdkVersion 14
    targetSdkVersion 26
    versionCode 1
    versionName "1.0"
    //testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}
}
dependencies {
//implementation 'com.android.support:support-v4:26.1.0'
compile fileTree(dir: 'libs', include: ['*.jar'])
/*androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
    exclude group: 'com.android.support', module: 'support-annotations'
})*/
compile 'com.android.support:appcompat-v7:26.1.0'
compile 'com.android.support:design:26.1.0'
compile 'com.android.support.constraint:constraint-layout:1.0.2'
compile 'com.squareup.okhttp3:okhttp:3.10.0'
//for graphs
implementation 'com.github.PhilJay:MPAndroidChart:v3.0.3'
compile group: 'com.google.code.gson', name: 'gson', version: '2.8.0'
testCompile 'junit:junit:4.12'
}

我被困在这个上。任何帮助将不胜感激。谢谢。

edit1

从屏幕上删除了所有相对布局。仍然给我提供相对布局的循环依赖性错误。现在这让我很生气。

edit2

在进一步挖掘时，我发现它正在内置class recyclerview.java内部崩溃child.Measure(widthspec，heightspec(;。不知道是什么原因引起的。

public void measureChildWithMargins(View child, int widthUsed, int heightUsed) {
        final LayoutParams lp = (LayoutParams) child.getLayoutParams();
        final Rect insets = mRecyclerView.getItemDecorInsetsForChild(child);
        widthUsed += insets.left + insets.right;
        heightUsed += insets.top + insets.bottom;
        final int widthSpec = getChildMeasureSpec(getWidth(), getWidthMode(),
                getPaddingLeft() + getPaddingRight()
                        + lp.leftMargin + lp.rightMargin + widthUsed, lp.width,
                canScrollHorizontally());
        final int heightSpec = getChildMeasureSpec(getHeight(), getHeightMode(),
                getPaddingTop() + getPaddingBottom()
                        + lp.topMargin + lp.bottomMargin + heightUsed, lp.height,
                canScrollVertically());
        if (shouldMeasureChild(child, widthSpec, heightSpec, lp)) {
            child.measure(widthSpec, heightSpec);
        }
    }

Answer 1

您已不必要地将RelativeLayouts放置在RelativeLayout中。另外，使用ConstraintLayout时，您不需要Relativelayout。

这是参考链接：循环依赖性 - 大道 - 列表中的cannot-introativelayout-android

Answer 2

ah最后我解决了它。我的适配器XML有一条线android：layout_torightof ="@ id/mainrl"

<View
    android:layout_width="2dp"
    android:layout_height="wrap_content"
    android:id="@+id/separatorend"
    android:background="#ebebeb"
    android:layout_toRightOf="@+id/mainrl"
    android:layout_alignBottom="@+id/mainseparator"
    android:layout_toStartOf="@+id/imagesrl"
    android:layout_toLeftOf="@+id/imagesrl"/>

某种程度上没有在牛轧糖及以上检测到它，而是在棉花糖上检测到，并且在系统下被系统检测到，因此坠毁。删除这条线解决了崩溃。