CollapsingToolbarLayout crash on 4.4 devices (java

I have implemented the new style Collapsible Toolbar. I am using the same code as the example (Cheesesquare) demo app - which of course works fine on all devices. I need help figuring out what I am doing different then the sample (so my app won't crash).

My app runs great on 5.0+ devices, but crashes on older devices (OS 4.4.4) with an error that I can't isolate to my code (no references to my project's classes in the stack). Seems so strange to me that this is device specific (if this was a code error, it would crash everywhere)

I have (tried, but didn't help):

looked through all my XML and Java to ensure I am not setting a 0 as any dimension on any view
Ensured I am not setting padding anywhere
Removed ALL margins (just to check - didn't help, added back)
Removed all my setBackground() methods (no help)
Removed all elevation and radius attributes
Setting ALL CardViews to Visibility.GONE (still crashes even with all CardViews no being drawn)

The crash is coming from a class in AOSP: https://android.googlesource.com/platform/frameworks/support/+/master/v7/cardview/eclair-mr1/android/support/v7/widget/RoundRectDrawableWithShadow.java

I see a related Bug opened (but not assigned): https://code.google.com/p/android/issues/detail?id=157919 Interestingly, this bug states this doesn't crash on 4.3, but I don't have that device handy.

Suggestions about how I can debug the cause of this crash?:

E/AndroidRuntime(  708): java.lang.IllegalArgumentException: radius must be > 0
E/AndroidRuntime(  708):    at android.graphics.RadialGradient.<init>(RadialGradient.java:53)
E/AndroidRuntime(  708):    at android.support.v7.widget.RoundRectDrawableWithShadow.buildShadowCorners(RoundRectDrawableWithShadow.java:285)
E/AndroidRuntime(  708):    at android.support.v7.widget.RoundRectDrawableWithShadow.buildComponents(RoundRectDrawableWithShadow.java:307)
E/AndroidRuntime(  708):    at android.support.v7.widget.RoundRectDrawableWithShadow.draw(RoundRectDrawableWithShadow.java:209)
E/AndroidRuntime(  708):    at android.view.View.draw(View.java:15493)
E/AndroidRuntime(  708):    at android.widget.FrameLayout.draw(FrameLayout.java:472)
E/AndroidRuntime(  708):    at android.view.View.getDisplayList(View.java:14402)
E/AndroidRuntime(  708):    at android.view.View.getDisplayList(View.java:14444)
E/AndroidRuntime(  708):    at android.view.View.draw(View.java:15222)
E/AndroidRuntime(  708):    at android.view.ViewGroup.drawChild(ViewGroup.java:3340)
E/AndroidRuntime(  708):    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3176)
E/AndroidRuntime(  708):    at android.view.View.getDisplayList(View.java:14397)
E/AndroidRuntime(  708):    at android.view.View.getDisplayList(View.java:14444)
E/AndroidRuntime(  708):    at android.view.View.draw(View.java:15222)
E/AndroidRuntime(  708):    at android.view.ViewGroup.drawChild(ViewGroup.java:3340)
E/AndroidRuntime(  708):    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3176)
E/AndroidRuntime(  708):    at android.view.View.draw(View.java:15511)
E/AndroidRuntime(  708):    at android.widget.FrameLayout.draw(FrameLayout.java:472)
E/AndroidRuntime(  708):    at android.support.v4.widget.NestedScrollView.draw(NestedScrollView.java:1679)
E/AndroidRuntime(  708):    at android.view.View.getDisplayList(View.java:14402)
E/AndroidRuntime(  708):    at android.view.View.getDisplayList(View.java:14444)
E/AndroidRuntime(  708):    at android.view.View.draw(View.java:15222)
E/AndroidRuntime(  708):    at android.view.ViewGroup.drawChild(ViewGroup.java:3340)
E/AndroidRuntime(  708):    at android.support.design.widget.CoordinatorLayout.drawChild(CoordinatorLayout.java:1040)
E/AndroidRuntime(  708):    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3176)
E/AndroidRuntime(  708):    at android.view.View.getDisplayList(View.java:14397)
E/AndroidRuntime(  708):    at android.view.View.getDisplayList(View.java:14444)
E/AndroidRuntime(  708):    at android.view.View.draw(View.java:15222)
E/AndroidRuntime(  708):    at android.view.ViewGroup.drawChild(ViewGroup.java:3340)
E/AndroidRuntime(  708):    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3176)
E/AndroidRuntime(  708):    at android.view.View.draw(View.java:15511)
E/AndroidRuntime(  708):    at android.widget.FrameLayout.draw(FrameLayout.java:472)
E/AndroidRuntime(  708):    at android.view.View.getDisplayList(View.java:14402)
E/AndroidRuntime(  708):    at android.view.View.getDisplayList(View.java:14444)
E/AndroidRuntime(  708):    at android.view.View.draw(View.java:15222)
E/AndroidRuntime(  708):    at android.view.ViewGroup.drawChild(ViewGroup.java:3340)
E/AndroidRuntime(  708):    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3176)
E/AndroidRuntime(  708):    at android.view.View.getDisplayList(View.java:14397)
E/AndroidRuntime(  708):    at android.view.View.getDisplayList(View.java:14444)
E/AndroidRuntime(  708):    at android.view.View.draw(View.java:15222)
E/AndroidRuntime(  708):    at android.view.ViewGroup.drawChild(ViewGroup.java:3340)
E/AndroidRuntime(  708):    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3176)
E/AndroidRuntime(  708):    at android.view.View.getDisplayList(View.java:14397)
E/AndroidRuntime(  708):    at android.view.View.getDisplayList(View.java:14444)
E/AndroidRuntime(  708):    at android.view.View.draw(View.java:15222)
E/AndroidRuntime(  708):    at android.view.ViewGroup.drawChild(ViewGroup.java:3340)
E/AndroidRuntime(  708):    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3176)
E/AndroidRuntime(  708):    at android.view.View.getDisplayList(View.java:14397)
E/AndroidRuntime(  708):    at android.view.View.getDisplayList(View.java:14444)
E/AndroidRuntime(  708):    at android.view.View.draw(View.java:15222)
E/AndroidRuntime(  708):    at android.view.ViewGroup.drawChild(ViewGroup.java:3340)
E/AndroidRuntime(  708):    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3176)
E/AndroidRuntime(  708):    at android.view.View.draw(View.java:15511)
E/AndroidRuntime(  708):    at android.widget.FrameLayout.draw(FrameLayout.java:472)
E/AndroidRuntime(  708):    at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:2623)
E/AndroidRuntime(  708):    at android.view.View.getDisplayList(View.java:14402)
E/AndroidRuntime(  708):    at android.view.View.getDisplayList(View.java:14444)
E/AndroidRuntime(  708):    at android.view.HardwareRenderer$GlRenderer.buildDisplayList(HardwareRenderer.java:1597)
E/AndroidRuntime(  708):    at android.view.HardwareRenderer$GlRenderer.draw(HardwareRenderer.java:1469)
E/AndroidRuntime(  708):    at android.view.ViewRootImpl.draw(ViewRootImpl.java:2800)
E/AndroidRuntime(  708):    at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:2666)
E/AndroidRuntime(  708):    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2234)
E/AndroidRuntime(  708):    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1267)
E/AndroidRuntime(  708):    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6638)
E/AndroidRuntime(  708):    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:813)
E/AndroidRuntime(  708):    at android.view.Choreogra

My activity:

public class PaymentActivity extends AppCompatActivity {
    public static final String XTRA_DEVICENAME = "";
    private static String deviceName;
    private ItemDto deviceDto;
    private Activity mActivity;

    private OkHttpClient okclient;

    //Views
    private RelativeLayout infoLayout;
    private TextView deviceOwner;
    private TextView devicePrice;
    private TextView deviceInfo;
    private TextView payDurationTitle;
    private TextView payPriceTitle;
    private TextView payDurationText;
    private TextView payPriceText;
    private Button upBtn;
    private Button downBtn;
    private TextView incText;
    private View incrDivider;
    private FloatingActionButton fab;
    private ProgressBar devInfoProgress;
    private LinearLayout incrBtnView;

    private int mIterVal = 1;

    private Constants.ColorInfo colorTheme = Constants.ColorInfo.GREY;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mActivity = this;

        Intent intent = getIntent();
        deviceName = intent.getStringExtra(XTRA_DEVICENAME);

        setTheme(ColorUtil.getThemeForDevice(deviceName));
        colorTheme = ColorUtil.getColorTheme(deviceName);
        setContentView(R.layout.act_payment);

        final Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        toolbar.setNavigationOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                onBackPressed();
            }
        });

        okclient = new OkHttpClient();

        CollapsingToolbarLayout collapsingToolbar =
                (CollapsingToolbarLayout) findViewById(R.id.collapsing_toolbar);
        collapsingToolbar.setTitle(deviceName.toUpperCase());

        okclient = new OkHttpClient();

        final ImageView imageView = (ImageView) findViewById(R.id.backdrop);
        // todo get better default image
        final String paymentIconUrl = "http://xxx/" + deviceName + "_lg.png";

        Glide.with(mActivity)
                .load(paymentIconUrl)
                .diskCacheStrategy(DiskCacheStrategy.ALL)
                .placeholder(R.drawable.ic_logo_allwhite)
                .error(R.drawable.ic_logo_allwhite)
                .into(imageView);

        setupViews();
        new GetItemInfoTask().execute(deviceName);
    }

    private void setupViews() {
        infoLayout = (RelativeLayout) findViewById(R.id.device_info_layout);
        infoLayout.setBackgroundColor(getResources().getColor(ColorUtil.getDeviceColor(deviceName, ColorUtil.COLOR_SECONDARY)));

        incrBtnView = (LinearLayout) findViewById(R.id.incr_btn_view);
        deviceOwner = (TextView) findViewById(R.id.info_owner);
        devicePrice = (TextView) findViewById(R.id.info_price);
        deviceInfo = (TextView) findViewById(R.id.info_max_amount);
        payDurationTitle = (TextView) findViewById(R.id.paidDurationTitle);
        payPriceTitle = (TextView) findViewById(R.id.paidAmountTitle);
        payDurationText = (TextView) findViewById(R.id.paidDurationText);
        payPriceText = (TextView) findViewById(R.id.paidAmountText);

        devInfoProgress = (ProgressBar) findViewById(R.id.devinfo_progress);
        devInfoProgress.getIndeterminateDrawable().setColorFilter(getResources().getColor(R.color.card_white), android.graphics.PorterDuff.Mode.MULTIPLY);

        Drawable tmpDrawable = ColorUtil.getTintedDrawable(mActivity, R.drawable.ic_attach_money, colorTheme.getSecondary());
        payPriceTitle.setCompoundDrawablesWithIntrinsicBounds(tmpDrawable, null, null, null);

        Drawable tmpDrawable2 = ColorUtil.getTintedDrawable(mActivity, R.drawable.ic_clock, colorTheme.getSecondary());
        payDurationTitle.setCompoundDrawablesWithIntrinsicBounds(tmpDrawable2, null, null, null);

        upBtn = (Button) findViewById(R.id.pay_inc_up_btn);
        downBtn = (Button) findViewById(R.id.pay_inc_down_btn);
        incText = (TextView) findViewById(R.id.pay_inc_text);
        incrDivider = (View) findViewById(R.id.iter_divider);

        upBtn.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                ...
            }
        });
        downBtn.setOnClickListener(new View.OnClickListener() {

            public void onClick(View v) {
                ...
            }
        });

        upBtn.setBackground(mActivity.getResources().getDrawable(colorTheme.getSelectorId()));
        downBtn.setBackground(mActivity.getResources().getDrawable(colorTheme.getSelectorId()));

        fab = (FloatingActionButton) findViewById((R.id.pay_fab_btn));
        //TODO - manually coloring FAB, should do with color state list
        fab.setEnabled(false);
        fab.setBackgroundTintList(ColorStateList.valueOf(getResources().getColor(R.color.grey_300)));

        fab.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                fab.setBackgroundTintList(ColorStateList.valueOf(getResources().getColor(R.color.card_white)));
                ...

            }
        });

    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_payment, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }


    private class GetItemInfoTask extends AsyncTask<String, Void, String> {
        @Override
        protected String doInBackground(String... params) {
            ...

            return null;
        }

        @Override
        protected void onPostExecute(String result) {
        ...

        }

        @Override
        protected void onPreExecute() {
            devInfoProgress.setVisibility(View.VISIBLE);
        }

        @Override
        protected void onProgressUpdate(Void... values) {

        }
    }

}

My Layout.xml:

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:card_view="http://schemas.android.com/tools"
    android:id="@+id/main_content"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/appbar"
        android:layout_width="match_parent"
        android:layout_height="@dimen/payments_backdrop_height"
        android:fitsSystemWindows="true"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

        <android.support.design.widget.CollapsingToolbarLayout
            android:id="@+id/collapsing_toolbar"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:fitsSystemWindows="true"
            app:contentScrim="?attr/colorPrimary"
            app:expandedTitleMarginEnd="64dp"
            app:expandedTitleMarginStart="48dp"
            app:layout_scrollFlags="scroll|exitUntilCollapsed">

            <ImageView
                android:id="@+id/backdrop"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:fitsSystemWindows="true"
                android:scaleType="centerCrop"
                android:transitionName="device_img"
                app:layout_collapseMode="parallax" />

            <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                app:layout_collapseMode="pin"
                app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />
        </android.support.design.widget.CollapsingToolbarLayout>

    </android.support.design.widget.AppBarLayout>

    <android.support.v4.widget.NestedScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_behavior="@string/appbar_scrolling_view_behavior">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="@color/grey_200"
            android:orientation="vertical">

            <RelativeLayout
                android:id="@+id/device_info_layout"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:orientation="vertical">

                <TextView
                    android:id="@+id/info_owner"
                    style="@style/DeviceInfo" />

                <TextView
                    android:id="@+id/info_price"
                    style="@style/DeviceInfo"
                    android:layout_below="@+id/info_owner"/>

                <TextView
                    android:id="@+id/info_max_amount"
                    style="@style/DeviceInfo"
                    android:layout_below="@+id/info_price"
                    android:layout_marginBottom="@dimen/grid1" />

                <ProgressBar
                    android:id="@+id/devinfo_progress"
                    style="?android:attr/progressBarStyleLarge"
                    android:layout_width="@dimen/rythm48"
                    android:layout_height="@dimen/rythm48"
                    android:layout_toRightOf="@+id/info_price"
                    android:layout_marginRight="@dimen/grid5"
                    android:layout_marginTop="@dimen/grid1"
                    android:visibility="gone" />

           </RelativeLayout>

            <android.support.v7.widget.CardView
                android:id="@+id/device_info_card"
                style="@style/CardView"
                card_view:cardCornerRadius="4dp"
                card_view:cardElevation="6dp">

                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:orientation="vertical">

                    <TextView
                        android:id="@+id/launch_title"
                        style="@style/CardTitle"
                        android:text="Current Amounts" />

                    <LinearLayout
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:layout_below="@+id/confirm_text"
                        android:layout_marginBottom="@dimen/grid5"
                        android:orientation="horizontal"
                        android:weightSum="2">

                        <LinearLayout
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_weight="1"
                            android:gravity="center"
                            android:orientation="vertical">

                            <TextView
                                android:id="@+id/paidAmountTitle"
                                style="@style/TextAppearance.AppCompat.Medium"
                                android:layout_width="wrap_content"
                                android:layout_height="wrap_content"
                                android:drawableLeft="@drawable/ic_dollar"
                                android:gravity="center"
                                android:text="@string/paid_amount_title" />

                            <TextView
                                android:id="@+id/paidAmountText"
                                style="@style/TextAppearance.AppCompat.Headline"
                                android:layout_width="wrap_content"
                                android:layout_height="wrap_content" />

                        </LinearLayout>

                        <LinearLayout
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_weight="1"
                            android:gravity="center"
                            android:orientation="vertical">

                            <TextView
                                android:id="@+id/paidDurationTitle"
                                style="@style/TextAppearance.AppCompat.Medium"
                                android:layout_width="wrap_content"
                                android:layout_height="wrap_content"
                                android:drawableLeft="@drawable/ic_clock"
                                android:gravity="center"
                                android:text="@string/paid_duration_title" />

                            <TextView
                                android:id="@+id/paidDurationText"
                                style="@style/TextAppearance.AppCompat.Headline"
                                android:layout_width="wrap_content"
                                android:layout_height="wrap_content" />

                        </LinearLayout>
                    </LinearLayout>

                    <View
                        android:id="@+id/iter_divider"
                        android:layout_width="wrap_content"
                        android:layout_height="1dp"
                        android:layout_marginBottom="@dimen/grid2"
                        android:layout_marginTop="@dimen/grid_5"
                        android:background="@color/grey_400"
                        android:visibility="gone"/>

                    <LinearLayout
                        android:id="@+id/incr_btn_view"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:layout_marginBottom="@dimen/grid5"
                        android:layout_marginLeft="@dimen/grid4"
                        android:layout_marginRight="@dimen/grid4"
                        android:orientation="horizontal"
                        android:gravity="center"
                        android:weightSum="3"
                        android:visibility="gone">

                        <Button
                            android:id="@+id/pay_inc_down_btn"
                            style="@style/InfoButton"
                            android:layout_width="@dimen/rythm48"
                            android:layout_height="@dimen/rythm48"
                            android:text="-"
                            android:textSize="32sp"
                            android:layout_weight="1"/>

                        <TextView
                            android:id="@+id/pay_inc_text"
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:text="1"
                            android:gravity="center"
                            android:layout_marginRight="@dimen/grid2"
                            android:layout_marginLeft="@dimen/grid2"
                            android:textSize="24sp"
                            android:layout_weight="1"/>

                        <Button
                            android:id="@+id/pay_inc_up_btn"
                            style="@style/InfoButton"
                            android:layout_width="@dimen/rythm48"
                            android:layout_height="@dimen/rythm48"
                            android:text="+"
                            android:textSize="32sp"
                            android:layout_weight="1"/>

                    </LinearLayout>
                </LinearLayout>

            </android.support.v7.widget.CardView>

            <android.support.v7.widget.CardView
                android:id="@+id/provider_card_view"
                style="@style/CardView"
                card_view:cardCornerRadius="4dp"
                card_view:cardElevation="6dp">

                <fragment
                    android:id="@+id/provider_fragment"
                    android:name="com.cleartoken.pay.ui.frag.ProviderFragment"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content" />

            </android.support.v7.widget.CardView>

            <android.support.v7.widget.CardView
                style="@style/CardView"
                card_view:cardCornerRadius="4dp"
                card_view:cardElevation="6dp">

                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:orientation="vertical">

                    <TextView
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:text="Info"
                        android:textAppearance="@style/TextAppearance.AppCompat.Title" />

                    <TextView
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:text="@string/long_text" />
                </LinearLayout>
            </android.support.v7.widget.CardView>
        </LinearLayout>
    </android.support.v4.widget.NestedScrollView>

    <android.support.design.widget.FloatingActionButton
        android:id="@+id/pay_fab_btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="@dimen/grid2"
        android:clickable="true"
        android:src="@drawable/ic_fab_enabled"
        app:borderWidth="0dp"
        app:layout_anchor="@id/device_info_card"
        app:layout_anchorGravity="bottom|right|end" />

</android.support.design.widget.CoordinatorLayout>

The CardView style.xml snippet:

<style name="CardView">
    <item name="android:layout_width">match_parent</item>
    <item name="android:layout_height">wrap_content</item>
    <item name="android:layout_gravity">center</item>
    <item name="android:layout_margin">@dimen/grid1</item>
</style>

Note:

I use this same Card style universally. On Act#1 this works* (big difference in that Act#1 does NOT have the Coordinator Layout).

My card XML looks like this universally:

 <android.support.v7.widget.CardView
            android:id="@+id/device_info_card"
            style="@style/CardView"
            card_view:cardCornerRadius="4dp"
            card_view:cardElevation="6dp">

回答1:

There is one thing that stands out to me in your stack errors. It seems in 4.4 and below, your app is trying to draw a gui greater than the actual phone width. The RadialGradient error doesn't make sense to me since, it is supposed to be greater than screen size rather than less than zero.

/** Create a shader that draws a radial gradient given the center and radius.
    @param centerX  The x-coordinate of the center of the radius
    @param centerY  The y-coordinate of the center of the radius
    @param radius   Must be positive. The radius of the circle for this gradient.
    @param colors   The colors to be distributed between the center and edge of the circle
    @param stops    May be <code>null</code>. Valid values are between <code>0.0f</code> and
                    <code>1.0f</code>. The relative position of each corresponding color in
                    the colors array. If <code>null</code>, colors are distributed evenly
                    between the center and edge of the circle.
    @param tileMode The Shader tiling mode
*/
public RadialGradient(float centerX, float centerY, float radius,
           @NonNull int colors[], @Nullable float stops[], @NonNull TileMode tileMode) {
    if (radius <= 0) {
        throw new IllegalArgumentException("radius must be > 0");
    }
    if (colors.length < 2) {
        throw new IllegalArgumentException("needs >= 2 number of colors");
    }
    if (stops != null && colors.length != stops.length) {
        throw new IllegalArgumentException("color and position arrays must be of equal length");
    }
    mType = TYPE_COLORS_AND_POSITIONS;
    mX = centerX;
    mY = centerY;
    mRadius = radius;
    mColors = colors;
    mPositions = stops;
    mTileMode = tileMode;
    init(nativeCreate1(centerX, centerY, radius, colors, stops, tileMode.nativeInt));
}

That's a snippet from the radialgradient class. A way to force the code to run would be to simply edit the radialgradient class if you can do that (Android Studio has a way of doing that).

My solution to this problem would be to first go through your xml file and start to remove lines of code that are not common/doesn't make sense. Like:

android:fitsSystemWindows="true"

fitSystemWindow Multiple Calls

Also another thing your should avoid is the weightsum and weight tags for Linear Layout. And try making your parent widget a RelativeLayout.

EDIT:

After thinking for a while (just 2 mins) I realized the error could just be due to the styles.xml implementation. Are you sure you copied all the folders you saw in the git repo?

Sometimes when this errors occur, it's usually because of the values-v21 folder not been added with the appropriate styles.xml.

So If you don't have the values-v21 folder, do this: -Create a values-v21 folder under the res folder. -Then create a styles.xml folder under the values-v21 folder and add this code.

<resources>

<style name="Theme.DesignDemo" parent="Base.Theme.DesignDemo">
    <item name="android:windowDrawsSystemBarBackgrounds">true</item>
    <item name="android:statusBarColor">@android:color/transparent</item>
</style>

回答2:

For future people, I found my issue - the Style I was using had the same name as another Style used by the framework (CardView).

I changed the name of this in my styles.xml file to something else (MyCardView) and the crash went away.

In hindsight, I was causing a regression by using that common name.

回答3:

According to CardView's Doc:

Before L, CardView adds padding to its content and draws shadows to that area. This padding amount is equal to maxCardElevation + (1 - cos45) * cornerRadius on the sides and maxCardElevation * 1.5 + (1 - cos45) * cornerRadius on top and bottom.

Since padding is used to offset content for shadows, you cannot set padding on CardView. Instead, you can use content padding attributes in XML or setContentPadding(int, int, int, int) in code to set the padding between the edges of the Card and children of CardView.

Check all wrap-parent values. I think some where in your code is changing this padding behavior which caused mCornerRadius < 0 in buildShadowCorners method in RoundRectDrawableWithShadow.java.

These links maybe help:

width and height must be > 0 error

Android CardView padding and minHeight

CardView inside RecyclerView has extra margins

回答4:

I had the same issue and I found that I had app:cardCornerRadius="0dp" on cardview attributes. When I removed it then my problem solved. Hope this helps

回答5:

I have adater with the item main container as cardview and i had the cardCornerRadius set to 0 :