一.对话框
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
private boolean[] checkedItems;//记录各列表项的状态
private String[] items;//各列表项要显示的内容
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button button1 = (Button) findViewById(R.id.button1); // 获取“显示带取消、确定按钮的对话框”按钮
// 为“显示带取消、确定按钮的对话框”按钮添加单击事件监听器
button1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//创建对话框对象
AlertDialog alertDialog = new AlertDialog.Builder(MainActivity.this).create();
alertDialog.setIcon(R.drawable.advise); //设置对话框的图标
alertDialog.setTitle("乔布斯:"); //设置对话框的标题
alertDialog.setMessage("活着就是为了改变世界,难道还有其他原因吗?"); //设置要显示的内容
//添加取消按钮
alertDialog.setButton(DialogInterface.BUTTON_NEGATIVE, "否", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(MainActivity.this, "您单击了否按钮", Toast.LENGTH_SHORT).show();
}
});
//添加确定按钮
alertDialog.setButton(DialogInterface.BUTTON_POSITIVE, "是", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(MainActivity.this, "您单击了是按钮 ", Toast.LENGTH_SHORT).show();
}
});
alertDialog.show(); //显示对话框
}
});
Button button2 = (Button) findViewById(R.id.button2); // 获取“显示带列表的对话框”按钮
button2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//创建名言字符串数组
final String[] items = new String[]{"当你有使命,它会让你更专注", "要么出众,要么出局", "活着就是为了改变世界",
"求知若饥,虚心若愚"};
//创建列表对话框对象
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
builder.setIcon(R.drawable.advise1); //设置对话框的图标
builder.setTitle("请选择你喜欢的名言:"); //设置对话框的标题
//添加列表项
builder.setItems(items, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(MainActivity.this,
"您选择了" + items[which], Toast.LENGTH_SHORT).show();
}
});
builder.create().show(); // 创建对话框并显示
}
});
Button button3 = (Button) findViewById(R.id.button3); // 获取“显示带单选列表项的对话框”按钮
button3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//创建名字字符串数组
final String[] items = new String[]{"扎克伯格", "乔布斯", "拉里.埃里森", "安迪.鲁宾", "马云"};
// 显示带单选列表项的对话框
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
builder.setIcon(R.drawable.advise2); //设置对话框的图标
builder.setTitle("如果让你选择,你最想做哪一个:"); //设置对话框的标题
builder.setSingleChoiceItems(items, 0, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(MainActivity.this,
"您选择了" + items[which], Toast.LENGTH_SHORT).show(); //显示选择结果
}
});
builder.setPositiveButton("确定", null); //添加确定按钮
builder.create().show(); // 创建对话框并显示
}
});
Button button4 = (Button) findViewById(R.id.button4); // 获取“显示带多选列表项的对话框”按钮
button4.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
checkedItems = new boolean[]{false, true, false, true, false}; //记录各列表项的状态
//各列表项要显示的内容
items = new String[]{"开心消消乐", "球球大作战", "欢乐斗地主", "梦幻西游", "超级玛丽"};
// 显示带单选列表项的对话框
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
builder.setIcon(R.drawable.advise2); //设置对话框的图标
builder.setTitle("请选择您喜爱的游戏:"); //设置对话框标题
builder.setMultiChoiceItems(items, checkedItems, new DialogInterface.OnMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialog, int which, boolean isChecked) {
checkedItems[which] = isChecked; //改变被操作列表项的状态
}
});
//为对话框添加“确定”按钮
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
String result = "";
for (int i = 0; i < checkedItems.length; i++) {
if (checkedItems[i]) { //当选项被选择时
result += items[i] + "、"; //将选项的内容添加到result中
}
}
//当result不为空时,通过消息提示框显示选择的结果
if (!"".equals(result)) {
result = result.substring(0, result.length() - 1); //去掉最后面添加的“、”号
Toast.makeText(MainActivity.this,
"您选择了[ " + result + " ]", Toast.LENGTH_LONG).show();
}
}
});
builder.create().show(); // 创建对话框并显示
}
});
}
}
二.通知栏
1.获取通知管理器并创建一个Notification对象
final NotificationManager notificationManager =
(NotificationManager) getSystemService(NOTIFICATION_SERVICE);
Notification.Builder notification = new Notification.Builder(this);
2.设置通知
3.发送通知
import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.os.Bundle;
public class MainActivity extends Activity {
final int NOTIFYID = 0x123; //通知的ID
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//获取通知管理器,用于发送通知
final NotificationManager notificationManager =
(NotificationManager) getSystemService(NOTIFICATION_SERVICE);
Notification.Builder notification = new Notification.Builder(this); // 创建一个Notification对象
// 设置打开该通知,该通知自动消失
notification.setAutoCancel(true);
// 设置通知的图标
notification.setSmallIcon(R.drawable.packet);
// 设置通知内容的标题
notification.setContentTitle("奖励百万红包!!!");
// 设置通知内容
notification.setContentText("点击查看详情!");
//设置使用系统默认的声音、默认震动
notification.setDefaults(Notification.DEFAULT_SOUND
| Notification.DEFAULT_VIBRATE);
//设置发送时间
notification.setWhen(System.currentTimeMillis());
// 创建一个启动其他Activity的Intent
Intent intent = new Intent(MainActivity.this
, DetailActivity.class);
PendingIntent pi = PendingIntent.getActivity(
MainActivity.this, 0, intent, 0);
//设置通知栏点击跳转
notification.setContentIntent(pi);
//发送通知
notificationManager.notify(NOTIFYID, notification.build());
}
}
三.广播
1.在Activity中发送广播
sendBroadcast(intent);
2.编写广播接收器代码
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;
public class MyReceiver extends BroadcastReceiver {
private static final String action1="com.mingrisoft";//声明第一个动作
private static final String action2="mingrisoft"; //声明第二个动作
public MyReceiver() {
}
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(action1)){
Toast.makeText(context, "MyReceiver收到:com.mingrisoft的广播",
Toast.LENGTH_SHORT).show(); //回复该动作收到广播
}else if (intent.getAction().equals(action2)){
Toast.makeText(context, "MyReceiver收到:mingrisoft的广播",
Toast.LENGTH_SHORT).show();//回复该动作收到广播
}
}
}
3.在AndroidManifest中注册广播
<receiver
android:name=".MyReceiver"
android:enabled="true"
android:exported="true">
<intent-filter>
<action android:name="com.mingrisoft"></action>
<action android:name="mingrisoft"></action>
</intent-filter>
</receiver>
四.闹钟
import android.app.Activity;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TimePicker;
import android.widget.Toast;
import java.util.Calendar;
public class MainActivity extends Activity {
TimePicker timepicker; // 时间拾取器
Calendar c; // 日历对象
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
c=Calendar.getInstance(); //获取日历对象
timepicker = (TimePicker) findViewById(R.id.timePicker1); // 获取时间拾取组件
timepicker.setIs24HourView(true); // 设置使用24小时制
Button button1 = (Button) findViewById(R.id.button1); // 获取“设置闹钟”按钮
// 为“设置闹钟”按钮添加单击事件监听器
button1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this,
AlarmActivity.class); // 创建一个Intent对象
PendingIntent pendingIntent = PendingIntent.getActivity(
MainActivity.this, 0, intent, 0); // 获取显示闹钟的PendingIntent对象
// 获取AlarmManager对象
AlarmManager alarm = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
c.set(Calendar.HOUR_OF_DAY, timepicker.getCurrentHour()); // 设置闹钟的小时数
c.set(Calendar.MINUTE, timepicker.getCurrentMinute()); // 设置闹钟的分钟数
c.set(Calendar.SECOND,0); // 设置闹钟的秒数
alarm.set(AlarmManager.RTC_WAKEUP, c.getTimeInMillis(),
pendingIntent); // 设置一个闹钟
Toast.makeText(MainActivity.this, "闹钟设置成功", Toast.LENGTH_SHORT)
.show(); // 显示一个消息提示
}
});
}
}
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
/**
* Created by Administrator on 2016/3/23.
*/
public class AlarmActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
AlertDialog alert = new AlertDialog.Builder(this).create();
alert.setIcon(R.drawable.alarm); //设置对话框的图标
alert.setTitle("传递正能量:"); //设置对话框的标题
alert.setMessage("要么出众,要么出局"); //设置要显示的内容
//添加确定按钮
alert.setButton(DialogInterface.BUTTON_POSITIVE,"确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {}
});
alert.show(); // 显示对话框
}
}