Объяснение и решение внизу.

Я разрабатываю анимацию макета с одним слайдером, анимация работает нормально, но когда все процессы заканчиваются, они получают следующее исключение.

Я полагаюRelativeLayout Родителю есть чем заняться, кроме как, но я не знаю, как это решить.

09-06 11:24:58.952: E/Trace(30884): error opening trace file: No such file or directory (2)
09-06 11:25:09.113: E/AndroidRuntime(30884): FATAL EXCEPTION: main
09-06 11:25:09.113: E/AndroidRuntime(30884): java.lang.ClassCastException: android.widget.LinearLayout$LayoutParams cannot be cast to android.widget.FrameLayout$LayoutParams
09-06 11:25:09.113: E/AndroidRuntime(30884):    at android.widget.FrameLayout.onMeasure(FrameLayout.java:311)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at android.view.View.measure(View.java:15264)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4916)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at android.view.View.measure(View.java:15264)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4916)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1390)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at android.widget.LinearLayout.measureVertical(LinearLayout.java:681)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at android.widget.LinearLayout.onMeasure(LinearLayout.java:574)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at android.view.View.measure(View.java:15264)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4916)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2161)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at android.view.View.measure(View.java:15264)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2129)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1240)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1433)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1125)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4607)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:747)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at android.view.Choreographer.doCallbacks(Choreographer.java:567)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at android.view.Choreographer.doFrame(Choreographer.java:536)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:733)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at android.os.Handler.handleCallback(Handler.java:615)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at android.os.Handler.dispatchMessage(Handler.java:92)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at android.os.Looper.loop(Looper.java:153)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at android.app.ActivityThread.main(ActivityThread.java:5086)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at java.lang.reflect.Method.invokeNative(Native Method)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at java.lang.reflect.Method.invoke(Method.java:511)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:821)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:584)
09-06 11:25:09.113: E/AndroidRuntime(30884):    at dalvik.system.NativeStart.main(Native Method)

activity_home.xml

<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" >

    <LinearLayout
        android:id="@+id/leftView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#cad000"
        android:orientation="vertical" >
    </LinearLayout>

    <LinearLayout
        android:id="@+id/mainView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#876000"
        android:orientation="vertical" >

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:background="#cecece"
            android:orientation="horizontal" >

            <Button
                android:id="@+id/btnSlide"
                style="@style/btn1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="X" />
        </LinearLayout>
    </LinearLayout>

</RelativeLayout>

Деятельность

public class HomeActivity extends Activity implements OnClickListener {

    UserStorage userStorage = new UserStorage();

    private Button btnSlide;
    private LinearLayout mainView, leftView;
    private SliderAnimation slideAnimation;

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_home);

        this.leftView = (LinearLayout) findViewById(R.id.leftView);
        this.mainView = (LinearLayout) findViewById(R.id.mainView);

        this.btnSlide = (Button) findViewById(R.id.btnSlide);
        this.btnSlide.setOnClickListener(this);

        this.slideAnimation = new SliderAnimation(this);

        this.slideAnimation.initializeFilterAnimations(this.mainView, this.leftView);
    }

    @Override
    public void onClick(View v) {

        switch (v.getId()) {

        case R.id.btnSlide:

            this.slideAnimation.toggleLeftSliding();

            break;
        }
    }
}

AnimationListener

public class SliderAnimation implements AnimationListener {

    private Context context;

    private LinearLayout mainView, leftView;

    private Animation mainSlideIn, mainSlideOut;

    private boolean leftAnimated, rightAnimated = false;

    private int deviceWidth;

    public SliderAnimation(Context context) {

        this.context = context;

        DisplayMetrics displayMetrics = context.getResources()
                .getDisplayMetrics();

        this.deviceWidth = displayMetrics.widthPixels;
    }

    public void initializeFilterAnimations(LinearLayout mainView,
            LinearLayout leftView) {

        this.mainView = mainView;
        this.leftView = leftView;

        this.mainSlideIn = AnimationUtils.loadAnimation(context,
                R.anim.main_slide_in);
        this.mainSlideIn.setAnimationListener(this);

        this.mainSlideOut = AnimationUtils.loadAnimation(context,
                R.anim.main_slide_out);
        this.mainSlideOut.setAnimationListener(this);
    }

    public void toggleLeftSliding() {

        if (!this.leftAnimated) {

            this.mainView.startAnimation(this.mainSlideIn);
        } else {

            this.mainView.startAnimation(this.mainSlideOut);
        }
    }

    @Override
    public void onAnimationEnd(Animation animation) {

        if (!this.leftAnimated) {

            LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
                    (this.deviceWidth * 20) / 100, this.mainView.getHeight());

            params.leftMargin = (this.deviceWidth * 80) / 100;

            this.mainView.setLayoutParams(params);

            this.leftAnimated = true;
        } else {

            LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
                    this.deviceWidth, this.mainView.getHeight());

            params.leftMargin = 0;

            this.mainView.setLayoutParams(params);

            this.leftAnimated = false;
        }
    }

    @Override
    public void onAnimationRepeat(Animation animation) {
    }

    @Override
    public void onAnimationStart(Animation animation) {
    }
}

Заранее спасибо.

ОБЪЯСНЕНИЕ И РЕШЕНИЕ

Мы должны знать родительский контейнер ViewGroup для представления, потому что представления заполнены их родительскими LayoutParams для целей измерения.

Если мы не знаем простым взглядом на xml, который является родительской ViewGroup для View, мы всегда можем получить его ссылку с помощью метода .getParent () из экземпляра View.