在项目上使用动画

Question

我在以下代码中遇到两个问题。这段代码应该提供一个包含左，右和下三个选项的溢出菜单。他们必须使用默认动画相应地移动按钮。第一个问题是TransitionManager根本不起作用。按钮移动时没有任何动画。第二个问题是，当按钮向左和向右移动时，它会在操作栏后面丢失，我该怎么办呢？

public class MainActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

}


@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_main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    Button button = (Button)findViewById(R.id.button);
    RelativeLayout main_view = (RelativeLayout) findViewById(R.id.main_view);

    switch(item.getItemId()){
        case R.id.right:
            if(item.isChecked()){
                item.setChecked(false);
            }
            else
                item.setChecked(true);
            TransitionManager.beginDelayedTransition(main_view);
            RelativeLayout.LayoutParams positionRulesRight = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,
                    RelativeLayout.LayoutParams.WRAP_CONTENT);
            positionRulesRight.addRule(RelativeLayout.ALIGN_PARENT_TOP);
            positionRulesRight.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
            button.setLayoutParams(positionRulesRight);
            return true;

        case R.id.left:
            if(item.isChecked()){
                item.setChecked(false);
            }
            else
                item.setChecked(true);
            TransitionManager.beginDelayedTransition(main_view);
            RelativeLayout.LayoutParams positionRulesLeft = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,
                    RelativeLayout.LayoutParams.WRAP_CONTENT);
            positionRulesLeft.addRule(RelativeLayout.ALIGN_PARENT_TOP);
            positionRulesLeft.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
            button.setWidth(250);
            button.setHeight(250);
            button.setLayoutParams(positionRulesLeft);
            return true;

        case R.id.down:
            if(item.isChecked()){
                item.setChecked(false);
            }
            else
                item.setChecked(true);
            TransitionManager.beginDelayedTransition(main_view);
            RelativeLayout.LayoutParams positionRulesDown = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,
                    RelativeLayout.LayoutParams.WRAP_CONTENT);
            positionRulesDown.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
            positionRulesDown.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
            button.setLayoutParams(positionRulesDown);
            return true;

        default:
            return super.onOptionsItemSelected(item);

    }


}
}

activity_main.xml中

<?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"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.revolise.animations.MainActivity">

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:popupTheme="@style/AppTheme.PopupOverlay" />

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

    <include layout="@layout/content_main"
        android:id="@+id/include" />


    <Button
        android:id="@+id/button"
        android:layout_width="200dp"
        android:layout_height="200dp"
        android:layout_marginLeft="15dp"
        android:layout_marginTop="70dp"
        android:text="@string/button_text"/>

    <RelativeLayout
        android:id="@+id/main_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

    </RelativeLayout>
</RelativeLayout>