Intent意图常见用法

 Intent常见的应用

(1).调用拨号程序

Uri uri = Uri.parse("tel:10086");   
Intent intent = new Intent(Intent.ACTION_DIAL, uri);   
startActivity(intent);   
(2).发送短信或者彩信
 
//发生短信  
Uri uri = Uri.parse("smsto:10086");   
Intent intent = new Intent(Intent.ACTION_SENDTO, uri);   
intent.putExtra("sms_body", "Hello");   
startActivity(intent);   
  
//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);   
(3).通过浏览器打开网页

Uri uri = Uri.parse("http://www.google.com");   
Intent intent  = new Intent(Intent.ACTION_VIEW, uri);   
startActivity(intent);  
(4).发送电子邮件

Uri uri = Uri.parse("mailto:[email protected]");   
Intent intent = new Intent(Intent.ACTION_SENDTO, uri);   
startActivity(intent);   
  
//给[email protected]发邮件发送内容为“Hello”的邮件   
Intent intent = new Intent(Intent.ACTION_SEND);   
intent.putExtra(Intent.EXTRA_EMAIL, "[email protected]");   
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 = {"[email protected]", "[email protected]"}; // 收件人   
String[] ccs = {"[email protected]", "[email protected]"}; // 抄送   
String[] bccs = {"[email protected]", "[email protected]"}; // 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);   
(5).显示地图与路径规划
 
// 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);   
  
// 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);   
(6).播放多媒体

Intent intent = new Intent(Intent.ACTION_VIEW);   
Uri uri = Uri.parse("file:///sdcard/foo.mp3");   
intent.setDataAndType(uri, "audio/mp3");   
startActivity(intent);   
  
Uri uri = Uri.withAppendedPath(MediaStore.Audio.Media.INTERNAL_CONTENT_URI, "1");   
Intent intent = new Intent(Intent.ACTION_VIEW, uri);   
startActivity(intent);   
(7).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");   
(8).获取并剪切图片

// 获取并剪切图片   
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);   
intent.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);   
(9).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);   
(10).安装和卸载程序
 
Uri uri = Uri.fromParts("package", "com.demo.app", null);     
Intent intent = new Intent(Intent.ACTION_DELETE, uri);     
startActivity(intent);   
(11).进入设置界面

// 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)