Android:旋转整个布局

Question

我需要能够动态旋转整个布局(点击按钮).

我能够使用例如旋转布局.layout.setRotation(270.0f).问题是,在旋转之后,布局height与width其父级不匹配.

我试过反转height,width像这样,

RelativeLayout layout = (RelativeLayout)findViewById(R.id.rootLayout);
LayoutParams layoutParams = layout.getLayoutParams();
int height = layout.getHeight();
int width = layout.getWidth();
layoutParams.height = width;
layoutParams.width = height;

什么都不做.

我正在努力sdk 14.

下面的第一张图片是应用程序启动时.第二个,轮换后.我想填补黑色的"空间".任何帮助,将不胜感激.

下面的图像仅显示布局中的按钮.然而,实际上,布局要复杂得多.我想要实现的是"假装"景观视图.

编辑:更改图像和添加说明.

Answer 1

不知道为什么这是有用的,但这是一个很好的谜题.这是适合我的东西:

在旋转单击时,执行以下操作:

RelativeLayout mainLayout = (RelativeLayout) findViewById(R.id.main);
int w = mainLayout.getWidth();
int h = mainLayout.getHeight();

mainLayout.setRotation(270.0f);
mainLayout.setTranslationX((w - h) / 2);
mainLayout.setTranslationY((h - w) / 2);

ViewGroup.LayoutParams lp = (ViewGroup.LayoutParams) mainLayout.getLayoutParams();
lp.height = w;
lp.width = h;
mainLayout.requestLayout();

和布局:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:id="@+id/main"
    android:layout_height="match_parent"
    android:background="#ffcc88"
    tools:context=".TestRotateActivity" >

    <Button 
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Test"
        android:layout_alignParentTop="true"
        android:layout_alignParentLeft="true"
        />

    <Button 
        android:id="@+id/rotate"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Rotate"
        android:layout_centerInParent="true"
        />

</RelativeLayout>

Answer 2

试试这个代码：

btnRotate.setOnClickListener(new OnClickListener()
{
    @SuppressLint("NewApi")
    @Override
    public void onClick(View v) 
    {
        int orientation = getResources().getConfiguration().orientation;
        switch(orientation)
        {
            case Configuration.ORIENTATION_LANDSCAPE:
                llparent.setRotation(270.0f);
                RelativeLayout.LayoutParams layoutParams_LandsScape =
                    new RelativeLayout.LayoutParams(
                        rlRoot.getHeight(), rlRoot.getWidth()); 
                layoutParams_LandsScape.setMargins(
                    rlRoot.getTop(), rlRoot.getRight(),
                    rlRoot.getBottom(), rlRoot.getLeft());
                layoutParams_LandsScape.addRule(RelativeLayout.CENTER_IN_PARENT);
                llparent.setLayoutParams(layoutParams_LandsScape);  
                break;
            case Configuration.ORIENTATION_PORTRAIT:
                llparent.setRotation(270.0f);
                RelativeLayout.LayoutParams layoutParams_Portrait =
                    new RelativeLayout.LayoutParams(
                        rlRoot.getHeight(), rlRoot.getWidth()); 
                layoutParams_Portrait.setMargins(
                    0, 0, rlRoot.getBottom(), rlRoot.getLeft());    
                layoutParams_Portrait.addRule(RelativeLayout.CENTER_IN_PARENT);
                llparent.setLayoutParams(layoutParams_Portrait);
                break;
            }
        }
    });
}

和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"
    tools:context=".RotateAnim">

    <RelativeLayout
        android:id="@+id/rlroot"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#090">

        <LinearLayout
            android:id="@+id/llParent"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="#900"
            android:gravity="center"
            android:orientation="vertical">

            <Button
                android:id="@+id/button1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center"
                android:gravity="center"
                android:text="Button"/>
        </LinearLayout>
    </RelativeLayout>
</RelativeLayout>