本文主要是介绍Android 弹框菜单系列之PopupMenu,希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!
菜单之前是用户点击系统的菜单键才展示出来的,后来这个键渐渐被移除,菜单变成了点击任意的view都可以展示。菜单非为3种:
1.Options menu and action bar 选项菜单和操作栏
2.Context menu and contextual action mode 上下文菜单和上下文动作模式
3.Popup menu 弹出式菜单
一.效果图:
这种的PopupMenu目前没有试过自定义布局式样,若项目中必须自定义布局的话,这个可能是有局限的
二.快速实现:
1.主函数代码:
import android.annotation.SuppressLint;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.view.menu.MenuPopupHelper;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.PopupMenu;
import android.widget.Toast;import com.example.qd.douyinwu.R;import java.lang.reflect.Field;/*** popupMenu* OptionsMenu 菜单*/
public class PopupMenu2Activity extends AppCompatActivity {//当前选择的menuItem的idprivate int checkedItemId = R.id.menu_setting_wifi;private Button popupMenu,btTest;private int y;private int x = 90;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_popupmenu2);popupMenu = findViewById(R.id.bt_popupmenu);btTest = findViewById(R.id.bt_test);popupMenu.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {showPopupMenu(v);}});}@SuppressLint("RestrictedApi")private void showPopupMenu(View view) {// 这里的view代表popupMenu需要依附的viewPopupMenu popupMenu = new PopupMenu(PopupMenu2Activity.this, view);// 获取布局文件popupMenu.getMenuInflater().inflate(R.menu.sample_menu, popupMenu.getMenu());//设置选中popupMenu.getMenu().findItem(checkedItemId).setChecked(true);//使用反射。强制显示菜单图标try {Field field = popupMenu.getClass().getDeclaredField("mPopup");field.setAccessible(true);MenuPopupHelper mHelper = (MenuPopupHelper) field.get(popupMenu);mHelper.setForceShowIcon(true);} catch (Exception e) {e.printStackTrace();}//显示PopupMenupopupMenu.show();//popupMenu.show();//默认显示在view的下方,如果要控制具体显示位置,需要使用反射来实现。// try {
// Field field = popupMenu.getClass().getDeclaredField("mPopup");
// field.setAccessible(true);
// MenuPopupHelper helper = (MenuPopupHelper) field.get(popupMenu);
// y = y - view.getHeight();//如果y取的是触摸点的位置,可能需要作此处理,经测试android5.1的设备会弹窗在屏幕之外
// helper.show(x, y);
// } catch (NoSuchFieldException e) {
// e.printStackTrace();
// } catch (IllegalAccessException e) {
// e.printStackTrace();
// }// 通过上面这几行代码,就可以把控件显示出来了popupMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {@Overridepublic boolean onMenuItemClick(MenuItem item) {// 控件每一个item的点击事件switch (item.getItemId()) {case R.id.next:
// checkedItemId = R.id.menu_setting_wifi;Toast.makeText(PopupMenu2Activity.this, "next", Toast.LENGTH_SHORT).show();break;case R.id.add:
// checkedItemId = R.id.menu_setting_gps;Toast.makeText(PopupMenu2Activity.this, "add", Toast.LENGTH_SHORT).show();break;case R.id.detail:Toast.makeText(PopupMenu2Activity.this, "detail", Toast.LENGTH_SHORT).show();break;case R.id.menu_setting_wifi:checkedItemId = R.id.menu_setting_wifi;Toast.makeText(PopupMenu2Activity.this, "WIFI", Toast.LENGTH_SHORT).show();break;case R.id.menu_setting_gps:checkedItemId = R.id.menu_setting_gps;Toast.makeText(PopupMenu2Activity.this, "GPS", Toast.LENGTH_SHORT).show();break;case R.id.menu_setting_userIcon:Toast.makeText(PopupMenu2Activity.this, "USER_ICON", Toast.LENGTH_SHORT).show();break;}return true;}});
// popupMenu.setOnDismissListener(new PopupMenu.OnDismissListener() {
// @Override
// public void onDismiss(PopupMenu menu) {
// // 控件消失时的事件
// }
// });
// popupMenu.show();switch (view.getId()) {case R.id.add:popupMenu.getMenu().findItem(R.id.del).setVisible(false);break;default:break;}}
// 有时候我们还需要根据不同的条件,显示或隐藏指定的 item,比如在点击第二个按钮的时候隐藏掉“删除歌曲”的选项,只需要添加几行代码:}
2.主函数布局:
<LinearLayout 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:background="@color/colorPrimary"android:orientation="horizontal"><Buttonandroid:id="@+id/bt_popupmenu"android:text="弹窗"android:layout_width="wrap_content"android:layout_height="wrap_content" /><Buttonandroid:id="@+id/bt_test"android:text="刷新"android:layout_width="wrap_content"android:layout_height="wrap_content" />
</LinearLayout>
3.menu布局:
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"><itemandroid:id="@+id/next"android:icon="@mipmap/ic_launcher"android:title="下一首播放"/><itemandroid:id="@+id/add"android:icon="@mipmap/ic_launcher"android:title="添加到歌单"/><itemandroid:id="@+id/detail"android:icon="@mipmap/ic_launcher"android:title="歌曲详情"/><itemandroid:id="@+id/del"android:icon="@mipmap/ic_launcher"android:title="删除歌曲"/><!--当中,checkableBehavior有3个值可选:single,all,none,分别表示单选、复选、不可选--><group android:checkableBehavior="single"><itemandroid:id="@+id/menu_setting_wifi"android:title="使用WIFI"android:orderInCategory="80"android:icon="@drawable/ic_launcher"app:showAsAction="ifRoom" /><itemandroid:id="@+id/menu_setting_gps"android:title="使用GPS"android:orderInCategory="90"android:icon="@drawable/ic_launcher"app:showAsAction="ifRoom" /></group><group><itemandroid:id="@+id/menu_setting_userIcon"android:title="设置头像"android:icon="@drawable/ic_launcher"android:orderInCategory="91"app:showAsAction="never" /></group>
</menu>
4.1.自定义布局的式样:分割线、背景颜色、字体大小
4.2.设置清单文件中的theme:
<activity android:name=".view.activity.popupmenu.PopupMenu2Activity" android:theme="@style/mainStyle"></activity>
4.3.theme:
<style name="mainStyle" parent="AppTheme"><item name="android:popupMenuStyle">@style/popmenuStyle</item><item name="android:dropDownListViewStyle">@style/popmenuDivier</item><item name="android:textAppearanceSmallPopupMenu">@style/popmeuText</item><item name="android:textAppearanceLargePopupMenu">@style/popmeuText</item></style><!--popMenu的Style--><style name="popmenuStyle" parent="@android:style/Widget.PopupMenu"><item name="android:popupBackground">@color/orange_500</item><!-- popMenu的背景色--></style><!--popmenu的字体颜色--><style name="popmeuText"><item name="android:textColor">@color/white</item><item name="android:textSize">20sp</item><item name="android:layout_height">20dp</item><item name="android:gravity">center</item></style><!--popMenu分割线的颜色--><style name="popmenuDivier"><item name="android:divider">@color/colorAccent</item><item name="android:dividerHeight">1sp</item></style>
设置布局中的高度没有效果,有实现的话可以留言
5.相关案例:
https://github.com/li-xiaojun/XPopup
https://hndeveloper.github.io/2017/github-android-ui.html
https://github.com/razerdp/BasePopup
https://github.com/Yuhoon/AdaptionDialog
这篇关于Android 弹框菜单系列之PopupMenu的文章就介绍到这儿,希望我们推荐的文章对编程师们有所帮助!