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Android开发笔记(一百二十)两种侧滑布局

时间:2016-08-19 17:34:20      阅读:660      评论:0      收藏:0      [点我收藏+]

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SlidingPaneLayout

SlidingPaneLayout是Android在android-support-v4.jar中推出的一个可滑动面板的布局,在前面《Android开发笔记(一百零一)滑出式菜单》中,我们提到水平布局时的LinearLayout无法自动左右拉伸,必须借助于手势事件才能拉出左侧隐藏的布局,现在SlidingPaneLayout便是为了解决LinearLayout无法自动拉伸的缺陷。只要我们在布局文件的SlidingPaneLayout节点下定义两个子布局,那么页面默认会把第一个子布局作为左侧隐藏面板,一旦用户的手势从左向右滑动,左侧面板就被拉了出来。


SlidingPaneLayout的使用挺简单的,下面是它的几个常用方法:
setSliderFadeColor : 设置主页面的阴影渐变色。即拉出左侧面板时,右边主页面的渐变阴影色,主页面变得越小则阴影色救越浓。阴影色默认为灰色。
setCoveredFadeColor : 设置左侧面板缩进去时的阴影渐变色。
setPanelSlideListener : 设置左侧面板的拉出监听器。该监听器实现了下面三个方法:
--onPanelClosed : 左侧面板已关闭。
--onPanelOpened : 左侧面板已打开。
--onPanelSlide : 左侧面板在滑动。
openPane : 打开左侧面板。
closePane : 关闭左侧面板。
isOpen : 判断左侧面板是否打开。


下面是使用SlidingPaneLayout的效果截图:
技术分享


下面是使用SlidingPaneLayout的布局文件示例:
<?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:id="@+id/sp_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <ListView
        android:id="@+id/lv_sliding"
        android:layout_width="150dp"
        android:layout_height="match_parent" />
    
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical" >

        <TextView
            android:id="@+id/tv_sliding"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="#ffffdd"
            android:paddingLeft="100dp"
            android:text="打开侧滑菜单"
            android:textColor="#000000"
            android:textSize="20sp" />

        <android.support.v4.view.ViewPager
            android:id="@+id/vp_sliding"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1" />
    </LinearLayout>

</android.support.v4.widget.SlidingPaneLayout>


下面是使用SlidingPaneLayout的页面代码示例:
import java.util.ArrayList;

import com.example.exmdrawer.fragment.ColorFragment;

import android.graphics.Color;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.support.v4.widget.SlidingPaneLayout;
import android.support.v4.widget.SlidingPaneLayout.PanelSlideListener;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;

public class SlidingActivity extends FragmentActivity implements 
		OnClickListener, OnItemClickListener {

    private final static String TAG = "SlidingActivity";
    private SlidingPaneLayout sp_layout;
    private ListView lv_sliding;
    private ViewPager vp_sliding;
    private TextView tv_sliding;
	private String[] colorDescArray = {"红色", "绿色", "蓝色", "白色", "黑色"};
	private int[] colorArray = {Color.RED, Color.GREEN, Color.BLUE, Color.WHITE, Color.BLACK};
	private ColorPagerAdapter vp_adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_sliding);
        sp_layout = (SlidingPaneLayout) findViewById(R.id.sp_layout);
        lv_sliding = (ListView) findViewById(R.id.lv_sliding);
        vp_sliding = (ViewPager) findViewById(R.id.vp_sliding);
        tv_sliding = (TextView) findViewById(R.id.tv_sliding);
        tv_sliding.setOnClickListener(this);
        
        //sp_layout.setSliderFadeColor(Color.YELLOW);
        sp_layout.setCoveredFadeColor(Color.RED);
        sp_layout.setPanelSlideListener(new SlidingPanelListener());
        ArrayAdapter<String> lv_adapter = new ArrayAdapter<String>(this,
				R.layout.list_item, colorDescArray);
        lv_sliding.setAdapter(lv_adapter);
        lv_sliding.setOnItemClickListener(this);
        vp_adapter = new ColorPagerAdapter(getSupportFragmentManager());
        vp_sliding.setAdapter(vp_adapter);
        vp_sliding.addOnPageChangeListener(new ColorPagerListener());
    }

	@Override
	public void onClick(View v) {
		if (v.getId() == R.id.tv_sliding) {
			if (sp_layout.isOpen()) {
				sp_layout.closePane();
			} else {
				sp_layout.openPane();
			}
		}
	}
	
	@Override
	public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
		vp_sliding.setCurrentItem(position);
		sp_layout.closePane();
	}

	public class SlidingPanelListener implements PanelSlideListener {
		@Override
		public void onPanelClosed(View arg0) {
			tv_sliding.setText("打开侧滑菜单");
		}

		@Override
		public void onPanelOpened(View arg0) {
			tv_sliding.setText("关闭侧滑菜单");
		}

		@Override
		public void onPanelSlide(View arg0, float arg1) {
		}
	}

	public class ColorPagerListener implements OnPageChangeListener {
		@Override
		public void onPageScrollStateChanged(int arg0) {
		}

		@Override
		public void onPageScrolled(int arg0, float arg1, int arg2) {
		}

		@Override
		public void onPageSelected(int position) {
			//tv_sliding.setText(colorDescArray[position]);
		}
	}

	private ArrayList<Fragment> mFragments;
	public class ColorPagerAdapter extends FragmentPagerAdapter {
		
		public ColorPagerAdapter(FragmentManager fm) {
			super(fm);
			mFragments = new ArrayList<Fragment>();
			for (int color : colorArray) {
				mFragments.add(new ColorFragment(color));
			}
		}

		@Override
		public int getCount() {
			return mFragments.size();
		}

		@Override
		public Fragment getItem(int position) {
			return mFragments.get(position);
		}
	}

}


下面是页面用到的Fragment代码示例:
import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.LinearLayout;

public class ColorFragment extends Fragment {

	private static final String TAG = "ColorFragment";
	protected Context mContext;

	private int mColor = -1;
	public ColorFragment(int colorRes) {
		mColor = colorRes;
	}

	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
		mContext = getActivity();
		if (savedInstanceState != null) {
			mColor = savedInstanceState.getInt("mColor");
		}
		LinearLayout layout = new LinearLayout(mContext);
		layout.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
		layout.setBackgroundColor(mColor);
		return layout;
	}

	@Override
	public void onSaveInstanceState(Bundle outState) {
		super.onSaveInstanceState(outState);
		if (mColor != -1) {
			outState.putInt("mColor", mColor);
		}
	}
	
}


DrawerLayout

DrawerLayout也是android-support-v4.jar中新加的抽屉式布局,它的用法更加类似于滑出式菜单的开源框架SlidingMenu,有关SlidingMenu的说明参见《Android开发笔记(一百零一)滑出式菜单》。DrawerLayout应该也是Android与时俱进的产物,它比SlidingPaneLayout更强大,不但可以拉出左侧抽屉面板,还可以拉出右侧抽屉面板。左侧面板与右侧面板的区别在于,左侧面板在布局文件中的layout_gravity属性为left,而右侧面板在布局文件中的layout_gravity属性为right。


下面是DrawerLayout的几个常用方法说明:
setDrawerShadow : 设置主页面的渐变阴影图形。
addDrawerListener : 添加抽屉面板的拉出监听器。该监听器实现了下面三个方法:
--onDrawerSlide : 抽屉面板在滑动。
--onDrawerOpened : 抽屉面板已打开。
--onDrawerClosed : 抽屉面板已关闭。
--onDrawerStateChanged : 抽屉面板的状态发生变化。
removeDrawerListener : 移除抽屉面板的拉出监听器。
closeDrawers : 关闭所有抽屉面板。
openDrawer : 打开指定抽屉面板。
closeDrawer : 关闭指定抽屉面板。
isDrawerOpen : 判断指定抽屉面板是否打开。


下面是使用DrawerLayout的效果截图:
技术分享


下面是使用DrawerLayout的布局文件示例:
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/dl_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

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

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

            <TextView
                android:id="@+id/tv_drawer_left"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:gravity="center"
                android:text="打开左边侧滑"
                android:textColor="#000000"
                android:textSize="20sp" />

            <TextView
                android:id="@+id/tv_drawer_right"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:gravity="center"
                android:text="打开右边侧滑"
                android:textColor="#000000"
                android:textSize="20sp" />
        </LinearLayout>

        <TextView
            android:id="@+id/tv_drawer_center"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1"
            android:gravity="top|center"
            android:paddingTop="30dp"
            android:text="首页"
            android:textColor="#000000"
            android:textSize="20sp" />
    </LinearLayout>

    <ListView
        android:id="@+id/lv_drawer_left"
        android:layout_width="150dp"
        android:layout_height="match_parent"
        android:layout_gravity="left"
        android:background="#ffdd99" />

    <ListView
        android:id="@+id/lv_drawer_right"
        android:layout_width="150dp"
        android:layout_height="match_parent"
        android:layout_gravity="right"
        android:background="#99ffdd" />

</android.support.v4.widget.DrawerLayout>


下面是使用DrawerLayout的页面代码示例:
import java.lang.reflect.Field;

import android.app.Activity;
import android.os.Bundle;
import android.support.v4.widget.DrawerLayout;
import android.support.v4.widget.DrawerLayout.DrawerListener;
import android.support.v4.widget.ViewDragHelper;
import android.util.DisplayMetrics;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.AdapterView.OnItemClickListener;

public class DrawerActivity extends Activity implements OnClickListener {

    private final static String TAG = "DrawerActivity";
    private DrawerLayout dl_layout;
    private TextView tv_drawer_left;
    private TextView tv_drawer_right;
    private TextView tv_drawer_center;
    private ListView lv_drawer_left;
    private ListView lv_drawer_right;
	private String[] titleArray = {"首页", "新闻", "娱乐", "博客", "论坛"};
	private String[] settingArray = {"我的", "设置", "关于"};
	
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_drawer);
        dl_layout = (DrawerLayout) findViewById(R.id.dl_layout);
        dl_layout.addDrawerListener(new SlidingListener());
        //setDrawerLeftEdgeSize(this, dl_layout, 0.3f);

        tv_drawer_left = (TextView) findViewById(R.id.tv_drawer_left);
        tv_drawer_right = (TextView) findViewById(R.id.tv_drawer_right);
        tv_drawer_center = (TextView) findViewById(R.id.tv_drawer_center);
        tv_drawer_left.setOnClickListener(this);
        tv_drawer_right.setOnClickListener(this);
        
        lv_drawer_left = (ListView) findViewById(R.id.lv_drawer_left);
        ArrayAdapter<String> left_adapter = new ArrayAdapter<String>(this,
				R.layout.list_item, titleArray);
        lv_drawer_left.setAdapter(left_adapter);
        lv_drawer_left.setOnItemClickListener(new LeftListListener());

        lv_drawer_right = (ListView) findViewById(R.id.lv_drawer_right);
        ArrayAdapter<String> right_adapter = new ArrayAdapter<String>(this,
				R.layout.list_item, settingArray);
        lv_drawer_right.setAdapter(right_adapter);
        lv_drawer_right.setOnItemClickListener(new RightListListener());
    }

	@Override
	public void onClick(View v) {
		if (v.getId() == R.id.tv_drawer_left) {
			if (dl_layout.isDrawerOpen(lv_drawer_left)) {
				dl_layout.closeDrawer(lv_drawer_left);
			} else {
				dl_layout.openDrawer(lv_drawer_left);
			}
		} else if (v.getId() == R.id.tv_drawer_right) {
			if (dl_layout.isDrawerOpen(lv_drawer_right)) {
				dl_layout.closeDrawer(lv_drawer_right);
			} else {
				dl_layout.openDrawer(lv_drawer_right);
			}
		}
	}

    private class LeftListListener implements OnItemClickListener {
		@Override
		public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
			String text = titleArray[position];
			tv_drawer_center.setText(text+text+text+text+text);
			dl_layout.closeDrawers();
		}
    }

    private class RightListListener implements OnItemClickListener {
		@Override
		public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
			String text = settingArray[position];
			tv_drawer_center.setText(text+text+text+text+text);
			dl_layout.closeDrawers();
		}
    }
    
    private class SlidingListener implements DrawerListener {
		@Override
		public void onDrawerSlide(View paramView, float paramFloat) {
		}

		@Override
		public void onDrawerOpened(View paramView) {
			if (paramView.getId() == R.id.lv_drawer_left) {
				tv_drawer_left.setText("关闭左边侧滑");
			} else {
				tv_drawer_right.setText("关闭右边侧滑");
			}
		}

		@Override
		public void onDrawerClosed(View paramView) {
			if (paramView.getId() == R.id.lv_drawer_left) {
				tv_drawer_left.setText("打开左边侧滑");
			} else {
				tv_drawer_right.setText("打开右边侧滑");
			}
		}

		@Override
		public void onDrawerStateChanged(int paramInt) {
		}
    }
    
    //设置左边侧滑的边缘大小
	private void setDrawerLeftEdgeSize(Activity act, DrawerLayout layout, float percentage) {
		if (act == null || layout == null)
			return;
		try {
			Field leftDraggerField = layout.getClass().getDeclaredField("mLeftDragger");
			leftDraggerField.setAccessible(true);
			ViewDragHelper leftDragger = (ViewDragHelper) leftDraggerField.get(layout);
			Field edgeSizeField = leftDragger.getClass().getDeclaredField("mEdgeSize");
			edgeSizeField.setAccessible(true);
			int edgeSize = edgeSizeField.getInt(leftDragger);
			DisplayMetrics dm = new DisplayMetrics();
			act.getWindowManager().getDefaultDisplay().getMetrics(dm);
			edgeSizeField.setInt(leftDragger, Math.max(edgeSize, (int) (dm.widthPixels * percentage)));
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

}


SlidingPaneLayout和DrawerLayout的区别

这两个侧滑布局都实现了侧滑菜单效果,当然它们之间也有些使用上的不同,下面是博主总结的几点区别:
1、SlidingPaneLayout只能定义一个侧滑面板,而且必须位于左侧;而DrawerLayout可定义两个侧滑面板,一个位于左侧,另一个位于右侧,当然如果你只定义一个侧滑面板也是可以的。
2、SlidingPaneLayout的侧滑面板在滑动时,主页面也跟着往右滑;而DrawerLayout的侧滑面板在滑动时,主页面是不会滑动的,也就是说,侧滑面板会遮盖住主页面的部分UI;
3、SlidingPaneLayout在主页面任何位置水平向右滑动,都会拉出左侧面板;而DrawerLayout只有在主页面左右边缘水平滑动时,才能拉出侧滑面板;
4、拉出侧滑面板时,SlidingPaneLayout主页面的灰色阴影较浅,不容易看到;而DrawerLayout主页面的灰色阴影较深,一下子就能看出来;






点此查看Android开发笔记的完整目录

Android开发笔记(一百二十)两种侧滑布局

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原文地址:http://blog.csdn.net/aqi00/article/details/52252835

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