右键菜单
import android.app.Activity;import android.os.Bundle;import android.view.ContextMenu;import android.view.Gravity;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.ContextMenu.ContextMenuInfo;import android.widget.TextView;import android.widget.Toast;/** * Class which shows how to use context menus * * @author FaYnaSoft Labs */public class Main extends Activity {private static final int NEW_MENU_ITEM = Menu.FIRST;private static final int SAVE_MENU_ITEM = NEW_MENU_ITEM + 1;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);TextView tv = (TextView) findViewById(R.id.textId);tv.setText("TextView element"); registerForContextMenu(tv);}@Overridepublic boolean onContextItemSelected(MenuItem item) {switch (item.getItemId()) {case NEW_MENU_ITEM:showMsg("New");break;case SAVE_MENU_ITEM:showMsg("Save");break;}return super.onContextItemSelected(item);}@Overridepublic void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {super.onCreateContextMenu(menu, v, menuInfo);menu.setHeaderTitle("My Context Menu");menu.add(0, NEW_MENU_ITEM, 0, "New");menu.add(0, SAVE_MENU_ITEM, 1, "Save");}private void showMsg(String message) {Toast msg = Toast.makeText(Main.this, message, Toast.LENGTH_LONG);msg.setGravity(Gravity.CENTER, msg.getXOffset() / 2,msg.getYOffset() / 2);msg.show();}}
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