Intent 的用法

1.拨打电话

// 给移动客服10086拨打电话

 Uri uri = Uri.parse("tel:10086");
 Intent intent = new Intent(Intent.ACTION_DIAL, uri);
 startActivity(intent);

2.发送短信

// 给10086发送内容为“Hello”的短信

Uri uri = Uri.parse("smsto:10086");
Intent intent = new Intent(Intent.ACTION_SENDTO, uri);
intent.putExtra("sms_body", "Hello");
startActivity(intent);

3.发送彩信（相当于发送带附件的短信）

Intent intent = new Intent(Intent.ACTION_SEND);
intent.putExtra("sms_body", "Hello");
Uri uri = Uri.parse("content://media/external/images/media/23");
intent.putExtra(Intent.EXTRA_STREAM, uri);
intent.setType("image/png");startActivity(intent);

4.打开浏览器

// 打开Google主页

Uri uri = Uri.parse("http://www.baidu.com");
Intent intent  = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);

5.发送电子邮件:(阉割了Google服务的没戏!!!!)

// 给someone@domain.com发邮件
Uri uri = Uri.parse("mailto:someone@domain.com");
Intent intent = new Intent(Intent.ACTION_SENDTO, uri);
startActivity(intent);

// 给someone@domain.com发邮件发送内容为“Hello”的邮件
Intent intent = new Intent(Intent.ACTION_SEND);
intent.putExtra(Intent.EXTRA_EMAIL, "someone@domain.com");
intent.putExtra(Intent.EXTRA_SUBJECT, "Subject");
intent.putExtra(Intent.EXTRA_TEXT, "Hello");
intent.setType("text/plain");
startActivity(intent);

// 给多人发邮件
Intent intent=new Intent(Intent.ACTION_SEND);
String[] tos = {"1@abc.com", "2@abc.com"};
 // 收件人
String[] ccs = {"3@abc.com", "4@abc.com"}; 
// 抄送
String[] bccs = {"5@abc.com", "6@abc.com"}; 
// 密送
intent.putExtra(Intent.EXTRA_EMAIL, tos);
intent.putExtra(Intent.EXTRA_CC, ccs);
intent.putExtra(Intent.EXTRA_BCC, bccs);
intent.putExtra(Intent.EXTRA_SUBJECT, "Subject");
intent.putExtra(Intent.EXTRA_TEXT, "Hello");
intent.setType("message/rfc822");
startActivity(intent);

6.显示地图:

// 打开Google地图中国北京位置（北纬39.9，东经116.3）

Uri uri = Uri.parse("geo:39.9,116.3");
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);

7.路径规划

// 路径规划：从北京某地（北纬39.9，东经116.3）到上海某地（北纬31.2，东经121.4）

Uri uri = Uri.parse("http://maps.google.com/maps?f=d&saddr=39.9 116.3&daddr=31.2 121.4");
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);

8.多媒体播放:

Intent intent = new Intent(Intent.ACTION_VIEW);
Uri uri = Uri.parse("file:///sdcard/foo.mp3");
intent.setDataAndType(uri, "audio/mp3");
startActivity(intent);

//获取SD卡下所有音频文件,然后播放第一首=-= 
Uri uri = Uri.withAppendedPath(MediaStore.Audio.Media.INTERNAL_CONTENT_URI, "1");
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);

9.打开摄像头拍照:

// 打开拍照程序

Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, 0);

// 取出照片数据
Bundle extras = intent.getExtras(); 
Bitmap bitmap = (Bitmap) extras.get("data");

//另一种:
//调用系统相机应用程序，并存储拍下来的照片

Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 
time = Calendar.getInstance().getTimeInMillis();
intent.putExtra(MediaStore.EXTRA_OUTPUT,Uri.fromFile(new File(Environment.getExternalStorageDirectory().getAbsolutePath()+"/tucue", time + ".jpg")));
startActivityForResult(intent, ACTIVITY_GET_CAMERA_IMAGE);

10.获取并剪切图片

// 获取并剪切图片
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
ntent.setType("image/*");
intent.putExtra("crop", "true"); 

// 开启剪切
intent.putExtra("aspectX", 1);

 // 剪切的宽高比为1：2
intent.putExtra("aspectY", 2);
intent.putExtra("outputX", 20); 

// 保存图片的宽和高
intent.putExtra("outputY", 40);
intent.putExtra("output", Uri.fromFile(new File("/mnt/sdcard/temp"))); 

// 保存路径
intent.putExtra("outputFormat", "JPEG");

// 返回格式
startActivityForResult(intent, 0);

// 剪切特定图片
Intent intent = new Intent("com.android.camera.action.CROP"); 
intent.setClassName("com.android.camera", "com.android.camera.CropImage"); 
intent.setData(Uri.fromFile(new File("/mnt/sdcard/temp")));
intent.putExtra("outputX", 1); 

// 剪切的宽高比为1：2
intent.putExtra("outputY", 2);
intent.putExtra("aspectX", 20); 

// 保存图片的宽和高
intent.putExtra("aspectY", 40);
intent.putExtra("scale", true);
intent.putExtra("noFaceDetection", true);
intent.putExtra("output", Uri.parse("file:///mnt/sdcard/temp")); 
startActivityForResult(intent, 0);

***11.打开Google Market ***

// 打开Google Market直接进入该程序的详细页面
Uri uri = Uri.parse("market://details?id=" + "com.demo.app");
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);

12.进入手机设置界面:

// 进入无线网络设置界面（其它可以举一反三） 
 Intent intent = new Intent(android.provider.Settings.ACTION_WIRELESS_SETTINGS); 
 startActivityForResult(intent, 0);

13.安装apk:

Uri installUri = Uri.fromParts("package", "xxx", null);
 returnIt = new Intent(Intent.ACTION_PACKAGE_ADDED, installUri);

14.卸载apk:

Uri uri = Uri.fromParts("package", strPackageName, null); 
Intent it = new Intent(Intent.ACTION_DELETE, uri); 
startActivity(it);

15.发送附件:

  Intent it = new Intent(Intent.ACTION_SEND);
 it.putExtra(Intent.EXTRA_SUBJECT, "The email subject text");
 it.putExtra(Intent.EXTRA_STREAM, "file:///sdcard/eoe.mp3");
 sendIntent.setType("audio/mp3");
 startActivity(Intent.createChooser(it, "Choose Email Client"));

16.进入联系人页面:

Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);intent.setData(People.CONTENT_URI);
startActivity(intent);

17.查看指定联系人:

Uri personUri = ContentUris.withAppendedId(People.CONTENT_URI, info.id);//info.id联系人
IDIntent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);intent.setData(personUri);
startActivity(intent);

18.返回Home界面

Intent it = new Intent();
it.setAction(Intent.ACTION_MAIN);
it.addCategory(Intent.CATEGORY_HOME);
startActivity(it);

19.打开百度页面

Intent it = new Intent();
it.setAction(Intent.ACTION_VIEW);
it.setData(Uri.parse("http://www.baidu.com"));
startActivity(it);