用于在 android 中设计动态布局，如主屏幕中的状态栏

Question

如何在 android 中进行布局，例如 主屏幕中的状态栏，它允许用户将状态栏拖动到任意高度。布局还应允许用户向上或向下滑动以完全扩展或收缩布局。

Answer 1

你的意思是SlidingDrawer之类的吗？

可以这样使用：

/src - SliderActivity.java:

import android.app.Activity;
import android.os.Bundle;
import android.widget.Button;
import android.widget.SlidingDrawer;
import android.widget.SlidingDrawer.OnDrawerCloseListener;
import android.widget.SlidingDrawer.OnDrawerOpenListener;

public class SliderActivity extends Activity {
    Button slideHandleButton;
    SlidingDrawer slidingDrawer;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);
        slideHandleButton = (Button) findViewById(R.id.slideHandleButton);
        slidingDrawer = (SlidingDrawer) findViewById(R.id.SlidingDrawer);

        slidingDrawer.setOnDrawerOpenListener(new OnDrawerOpenListener() {
            @Override
            public void onDrawerOpened() {
                slideHandleButton.setBackgroundResource(R.drawable.arrowdown);
            }
        });

        slidingDrawer.setOnDrawerCloseListener(new OnDrawerCloseListener() {
            @Override
            public void onDrawerClosed() {
                slideHandleButton.setBackgroundResource(R.drawable.arrowup);
            }
        });
    }
}

/res/layout - ma​​in.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:id="@+id/LinearLayout01"
    android:layout_width="fill_parent" android:layout_height="fill_parent"
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:gravity="bottom">
    <SlidingDrawer android:layout_width="wrap_content"
        android:id="@+id/SlidingDrawer" android:handle="@+id/slideHandleButton"
        android:content="@+id/contentLayout" android:padding="10dip"
        android:layout_height="200dip">
        <Button android:layout_width="wrap_content"
            android:layout_height="wrap_content" android:id="@+id/slideHandleButton"
            android:background="@drawable/arrowup"></Button>
        <LinearLayout android:layout_width="wrap_content"
            android:id="@+id/contentLayout" android:orientation="vertical"
            android:gravity="center|top" android:padding="10dip"
            android:background="#505050" android:layout_height="wrap_content">
            <TextView android:id="@+id/TextView01" android:layout_width="wrap_content"
                android:layout_height="fill_parent" android:layout_weight="8" android:text="Hello Slider"></TextView>
            <Button android:id="@+id/Button02" android:layout_weight="2" android:layout_width="wrap_content"
                android:layout_height="wrap_content" android:text="Do anything"></Button>
        </LinearLayout>
    </SlidingDrawer>
</LinearLayout>

您的 /res/drawable 文件夹中需要 2 张图片才能使其正常工作，例如本例中的 arrowup.png 和 arrowdown.png