Android中PopupWindow的使用

public class PopUpActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); LayoutInflater inflater = LayoutInflater.from(this); // 引入窗口配置文件 View view = inflater.inflate(R.layout.main2, null); // 创建PopupWindow对象 final PopupWindow pop = new PopupWindow(view, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, false); Button btn = (Button) findViewById(R.id.btn); // 需要设置一下此参数，点击外边可消失 pop.setBackgroundDrawable(new BitmapDrawable()); //设置点击窗口外边窗口消失 pop.setOutsideTouchable(true); // 设置此参数获得焦点，否则无法点击 pop.setFocusable(true); btn.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if(pop.isShowing()) { // 隐藏窗口，如果设置了点击窗口外小时即不需要此方式隐藏 pop.dismiss(); } else { // 显示窗口 pop.showAsDropDown(v); } } }); } }

main.xml

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <Button android:id="@+id/btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="dianji" /> </LinearLayout>
main2.xml

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <Button android:id="@+id/a" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="AAAAA" /> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="BBBBB" /> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="CCCCC" /> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="DDDDD" /> </LinearLayout>
效果很不错~~~