Android Material Design：PopupMenu
Android Material Design 引入的PopupMenu類似過去的上下文菜單，但是更靈活。 如圖所示：
現在給出實現上圖PopupMenu的代碼。 本例是一個普通的Button觸發彈出PopupMenu。
測試的MainActivity.java ：
package zhangphil.materialdesign; import android.app.Activity; import android.os.Bundle; import android.support.v.widget.PopupMenu; import android.view.MenuItem; import android.view.View; import android.widget.Button; import android.widget.Toast; public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); final Button button = (Button) findViewById(R.id.button); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { showPopupMenu(button); } }); } private void showPopupMenu(View view) { // View當前PopupMenu顯示的相對View的位置 PopupMenu popupMenu = new PopupMenu(this, view); // menu布局 popupMenu.getMenuInflater().inflate(R.menu.main, popupMenu.getMenu()); // menu的item點擊事件 popupMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() { @Override public boolean onMenuItemClick(MenuItem item) { Toast.makeText(getApplicationContext(), item.getTitle(), Toast.LENGTH_SHORT).show(); return false; } }); // PopupMenu關閉事件 popupMenu.setOnDismissListener(new PopupMenu.OnDismissListener() { @Override public void onDismiss(PopupMenu menu) { Toast.makeText(getApplicationContext(), "關閉PopupMenu", Toast.LENGTH_SHORT).show(); } }); popupMenu.show(); } } package zhangphil.materialdesign;import android.app.Activity;import android.os.Bundle;import android.support.v7.widget.PopupMenu;import android.view.MenuItem;import android.view.View;import android.widget.Button;import android.widget.Toast;public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); final Button button = (Button) findViewById(R.id.button); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { showPopupMenu(button); } }); } private void showPopupMenu(View view) { // View當前PopupMenu顯示的相對View的位置 PopupMenu popupMenu = new PopupMenu(this, view); // menu布局 popupMenu.getMenuInflater().inflate(R.menu.main, popupMenu.getMenu()); // menu的item點擊事件 popupMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() { @Override public boolean onMenuItemClick(MenuItem item) { Toast.makeText(getApplicationContext(), item.getTitle(), Toast.LENGTH_SHORT).show(); return false; } }); // PopupMenu關閉事件 popupMenu.setOnDismissListener(new PopupMenu.OnDismissListener() { @Override public void onDismiss(PopupMenu menu) { Toast.makeText(getApplicationContext(), "關閉PopupMenu", Toast.LENGTH_SHORT).show(); } }); popupMenu.show(); }}MainActivity.java需要的activity_main布局文件只含一個普通的Android Button，在次不再贅述。
位于menu目錄下的main.xml：
<menu xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" > <item android:id="@+id/action_open" android:orderInCategory=" android:title="打開" app:showAsAction="never"/> <item android:id="@+id/action_new" android:orderInCategory=" android:title="新建" app:showAsAction="never"/> <item android:id="@+id/action_del" android:orderInCategory=" android:title="刪除" app:showAsAction="never"/> </menu>
以上內容給大家分享基于Android實現點擊某個按鈕讓菜單選項從按鈕周圍指定位置彈出的相關知識，希望大家喜歡。
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