我有一个带有bottomnavigationview的Tablayout片段，其中包含三个片段。每个片段都有一个recyclerview和一个微调器。我的tablayout片段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>
每当我从微调器更改值并更新recyclerview时，它都会显示此错误
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
但是我在两种布局中都看不到任何循环引用。请注意，相同的布局适用于Nougat及更高版本。我似乎无法理解造成这种情况的原因。这是我的java类，我更新了微调器和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'
}
我被困在这上面了。任何帮助将不胜感激。谢谢。
从屏幕中删除所有相对布局。仍然给我相对布局中的循环依赖性错误。现在这让我感到沮丧。
在进一步挖掘时，我发现它在内置类Recyclerview.java中崩溃，如果此条件下的条件 child.measure（widthSpec，heightSpec）;.不知道造成这种情况的原因。
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);
}
}
答案 0 :(得分：0)
您已将RelativeLayouts放入RelativeLayout内。此外，当您使用ConstraintLayout时，您不需要RelativeLayout。
以下是参考链接：circular-dependencies-cannot-exist-in-relativelayout-android
答案 1 :(得分：0)
啊，最后我解决了它。我的适配器xml中有一行 机器人：layout_toRightOf =＆＃34; @ + ID / mainrl＆＃34;
<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"/>
不知何故，它没有在Nougat及以上的API中检测到，但在Marshmallow及其下方，系统正在检测它，因此造成了崩溃。删除此行解决了崩溃问题。