java - 创建一个类似 "Notification Bar"的菜单

Question

我需要在应用程序的底部创建一个类似通知栏的菜单。也就是说，你可以向右拖动通知栏？这也是我所需要的。

例如，在拖动之前，菜单应保持在底部，如下所示

拖拽后应该是这样的

到目前为止，我处理过的所有菜单都与菜单按钮有关，但这个没有。我怎样才能像这样创建？

Answer 1

使用滑动抽屉来实现这一点

http://developer.android.com/reference/android/widget/SlidingDrawer.html

SlidingDrawerActivity.java

public class SlidingDrawerActivity extends Activity implements OnClickListener {
 Button slideButton, b1, b2, b3;
 SlidingDrawer slidingDrawer;

 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_sliding_drawer);
  slideButton = (Button) findViewById(R.id.slideButton);
  slidingDrawer = (SlidingDrawer) findViewById(R.id.SlidingDrawer);
  b1 = (Button) findViewById(R.id.Button01);
  b2 = (Button) findViewById(R.id.Button02);
  b3 = (Button) findViewById(R.id.Button03);
  b1.setOnClickListener(this);
  b2.setOnClickListener(this);
  b3.setOnClickListener(this);
  slidingDrawer.setOnDrawerOpenListener(new OnDrawerOpenListener() {
   @Override
   public void onDrawerOpened() {
    slideButton.setText("V");
   }
  });
  slidingDrawer.setOnDrawerCloseListener(new OnDrawerCloseListener() {
   @Override
   public void onDrawerClosed() {
    slideButton.setText("^");
   }
  });
 }

 @Override
 public void onClick(View v) {
  Button b = (Button) v;
  Toast.makeText(SlidingDrawerActivity.this,
    b.getText() + " is Clicked :)", Toast.LENGTH_SHORT).show();
 }
}

activity_sliding_drawer.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:text="Drag the control at the bottom"
        android:textSize="20dp"
        tools:context=".SlidingDrawerActivity" />

    <SlidingDrawer
        android:id="@+id/SlidingDrawer"
        android:layout_width="wrap_content"
        android:layout_height="250dip"
        android:layout_alignParentBottom="true"
        android:content="@+id/contentLayout"
        android:handle="@+id/slideButton"
        android:orientation="vertical"
        android:padding="10dip" >

        <Button
            android:id="@+id/slideButton"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="^" >
        </Button>

        <LinearLayout
            android:id="@+id/contentLayout"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            android:padding="10dip" >

            <Button
                android:id="@+id/Button01"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_margin="2dp"
                android:text="Button 1" >
            </Button>

            <Button
                android:id="@+id/Button02"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_margin="2dp"
                android:text="Button 2" >
            </Button>

            <Button
                android:id="@+id/Button03"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_margin="2dp"
                android:text="Button 3" >
            </Button>
        </LinearLayout>
    </SlidingDrawer>

</RelativeLayout>