Android入门开发之Toast、Notification、Menu

转载请注明出处：http://write.blog.csdn.net/postedit/52490991

一、Toast和Notification

activity_main.xml文件：

<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context=".MainActivity" >    <TextView        android:id="@+id/textView1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textSize="10pt"        android:text="通知测试:" />    <Button        android:id="@+id/ToastButton"        android:layout_width="fill_parent"        android:layout_height="80dp"        android:layout_alignLeft="@+id/textView1"        android:layout_below="@+id/textView1"        android:layout_marginTop="40dp"        android:text="Toast" />      <Button          android:id="@+id/NotificationButton"          android:layout_width="fill_parent"          android:layout_height="80dp"          android:layout_alignLeft="@+id/textView1"          android:layout_centerVertical="true"          android:text="Notification" /></RelativeLayout>

MainActivity.java文件：

package com.example.notificationtest;import android.os.Bundle;import android.app.Activity;import android.app.Notification;import android.app.NotificationManager;import android.content.Context;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.Toast;public class MainActivity extends Activity {private Button ToastButton;private Button NotificationButton;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);initToastButton();initNotificationButton();}//初始化提示框按钮    private void initToastButton(){     ToastButton = (Button)findViewById(R.id.ToastButton);     ToastButton.setOnClickListener(new OnClickListener(){@Overridepublic void onClick(View v) {Toast toast =  Toast.makeText(MainActivity.this, "带图片的Toast", Toast.LENGTH_LONG);View toastview = toast.getView();ImageView imageview = new ImageView(MainActivity.this);imageview.setImageResource(R.drawable.ic_launcher);LinearLayout ll =new LinearLayout(MainActivity.this);ll.addView(imageview);ll.addView(toastview);toast.setView(ll);toast.show();}});    }    //初始化通知按钮    private void initNotificationButton(){    NotificationButton = (Button)findViewById(R.id.NotificationButton);    NotificationButton.setOnClickListener(new OnClickListener() {@SuppressWarnings("deprecation")@Overridepublic void onClick(View v) {                    Notification notify = new Notification();                    notify.icon = R.drawable.ic_launcher;                    notify.tickerText = "我是通知栏";                    notify.when = System.currentTimeMillis();                    notify.defaults = Notification.DEFAULT_SOUND;                    notify.defaults = Notification.DEFAULT_ALL;                    notify.setLatestEventInfo(MainActivity.this, "普通通知", "点击查看", null);                    NotificationManager mNotificationManager =                        (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);                    mNotificationManager.notify(1,notify);}});    }@Overridepublic boolean onCreateOptionsMenu(Menu menu) {getMenuInflater().inflate(R.menu.main, menu);return true;}}

    运行效果：

                                                     

二、Menu菜单

activity_main.xml文件：

<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context=".MainActivity" >    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textSize="10pt"        android:text="菜单测试" /></RelativeLayout>

MainActivity.java文件：

package com.example.menutest;import android.os.Bundle;import android.app.Activity;import android.view.Menu;import android.view.MenuItem;import android.view.SubMenu;import android.widget.Toast;public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {        SubMenu boymenu = menu.addSubMenu("帅哥");        boymenu.setIcon(R.drawable.ic_launcher);        boymenu.setHeaderIcon(R.drawable.ic_launcher);        boymenu.setHeaderTitle("你喜欢哪个");        boymenu.add("刘德华");        boymenu.add("吴彦祖");        boymenu.add("古天乐");        SubMenu girlmenu = menu.addSubMenu("靓女");        girlmenu.add("王祖贤");        girlmenu.add("张曼玉");        girlmenu.add("刘嘉玲");return true;}@Overridepublic boolean onOptionsItemSelected(MenuItem item) {Toast.makeText(MainActivity.this,"你点击了"+item.getTitle(),Toast.LENGTH_LONG).show();return super.onOptionsItemSelected(item);}}

      运行效果：