SlidingPaneLayout,DrawerLayout,ActionBar,NavigationView 详解 <二>SlidingPaneLayout 的 简单的使用

Metr design中所有的空间都是有厚度的。
在5.0以上，所有的控件都有自己的高度，就是z轴，在Metr design z轴越高，可以覆盖z轴低的控件。
在SlidingPaneLayout 的子控件里面增加一个属性：android:elevation="5dp"，该控件就会高于其他的控件了。

注：elevation就是高度和海拔的意思，还有高尚，立视图，正视图的意思

0：布局

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.SlidingPaneLayout 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" android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:id="@+id/slidingPaneLayout"
    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">

    <LinearLayout
        android:background="#090"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="First LinearLayout"/>
    </LinearLayout>
    <LinearLayout
        android:background="#6006"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:elevation="5dp"
        android:id="@+id/content">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Second LinearLayout"/>
    </LinearLayout>
</android.support.v4.widget.SlidingPaneLayout>

1：

package tech.androidstudio.slidingpanlayoutdemoreal;

import android.support.v4.view.ViewCompat;
import android.support.v4.widget.SlidingPaneLayout;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.LinearLayout;

public class MainActivity extends AppCompatActivity implements SlidingPaneLayout.PanelSlideListener {

    private SlidingPaneLayout mSlidingPaneLayout;
    private LinearLayout mContent;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mSlidingPaneLayout = (SlidingPaneLayout)findViewById(R.id.slidingPaneLayout);
        mContent = (LinearLayout)findViewById(R.id.content);
        mSlidingPaneLayout.setPanelSlideListener(this);
    }

    //在PanlSlide的PanelSlide回调方法里面
    //在PanlSlide的PanelSlide回调方法里面
    @Override
    public void onPanelSlide(View panel, float slideOffset) {

        //获取panel的高度
        int height = panel.getHeight();
        //设置缩放的中心点是右侧的中点
        mContent.setPivotX(0);
        mContent.setPivotY(height/2);

        //设置缩放的等级
        mContent.setScaleX(1-slideOffset);
        mContent.setScaleY(1-slideOffset);


//如果要兼容2.0的手机,2.0就是API5，2.1是API 7，2.3是API 9
//        http://blog.youkuaiyun.com/rodulf/article/details/50743187

//        ViewCompat.setPivotX(mContent, 0);
//        ViewCompat.setPivotX(mContent, height / 2);
//        ViewCompat.setScaleX(mContent, 1 - slideOffset);
//        ViewCompat.setScaleY(mContent, 1 - slideOffset);
    }

    @Override
    public void onPanelOpened(View panel) {

    }

    @Override
    public void onPanelClosed(View panel) {

    }
}