以下是常用到的Intent的URI及其示例，包含了大部分应用中用到的共用Intent。
一、打开一个网页，类别是Intent.ACTION_VIEW

Uri uri = Uri.parse(“http://blog.3gstdy.com/”);
Intent intent = new Intent(Intent.ACTION_VIEW, uri);

二、打开地图并定位到一个点

Uri uri = Uri.parse(“geo:52.76,-79.0342″);
Intent intent = new Intent(Intent.ACTION_VIEW, uri);

三、打开拨号界面 ,类型是Intent.ACTION_DIAL

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

四、直接拨打电话,与三不同的是，这个直接拨打电话，而不是打开拨号界面

Uri uri = Uri.parse(“tel:10086″);
Intent intent = new Intent(Intent.ACTION_CALL, uri);

五、卸载一个应用，Intent的类别是Intent.ACTION_DELETE

Uri uri = Uri.fromParts(“package”, “xxx”, null);
Intent intent = new Intent(Intent.ACTION_DELETE, uri);

六、安装应用程序,Intent的类别是Intent.ACTION_PACKAGE_ADDED

Uri uri = Uri.fromParts(“package”, “xxx”, null);
Intent intent = new Intent(Intent.ACTION_PACKAGE_ADDED, uri);

七、播放音频文件

Uri uri = Uri.parse(“file:///sdcard/download/everything.mp3″);
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
intent.setType(“audio/mp3″);

八、打开发邮件界面

Uri uri= Uri.parse(“mailto:admin@3gstdy.com”);
Intent intent = new Intent(Intent.ACTION_SENDTO, uri);

九、发邮件,与八不同这里是将邮件发送出去，

Intent intent = new Intent(Intent.ACTION_SEND);
String[] tos = { “admin@3gstdy.com” };
String[] ccs = { “webmaster@3gstdy.com” };
intent.putExtra(Intent.EXTRA_EMAIL, tos);
intent.putExtra(Intent.EXTRA_CC, ccs);
intent.putExtra(Intent.EXTRA_TEXT, “I come from http://blog.3gstdy.com”);
intent.putExtra(Intent.EXTRA_SUBJECT, “http://blog.3gstdy.com”);intent.setType(“message/rfc882″);
Intent.createChooser(intent, “Choose Email Client”);

//发送带附件的邮件

Intent intent = new Intent(Intent.ACTION_SEND);
intent.putExtra(Intent.EXTRA_SUBJECT, “The email subject text”);
intent.putExtra(Intent.EXTRA_STREAM, “file:///sdcard/mysong.mp3″);
intent.setType(“audio/mp3″);
startActivity(Intent.createChooser(intent, “Choose Email Client”));

十、发短信

Uri uri= Uri.parse(“tel:10086″);
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
intent.putExtra(“sms_body”, “I come from http://blog.3gstdy.com”);
intent.setType(“vnd.Android-dir/mms-sms”);

十一、直接发短信

Uri uri= Uri.parse(“smsto://100861″);
Intent intent = new Intent(Intent.ACTION_SENDTO, uri);
intent.putExtra(“sms_body”, “3g android http://blog.3gstdy.com”);

十二、发彩信

Uri uri= Uri.parse(“content://media/external/images/media/23″);
Intent intent = new Intent(Intent.ACTION_SEND);
intent.putExtra(“sms_body”, “3g android http://blog.3gstdy.com”);
intent.putExtra(Intent.EXTRA_STREAM, uri);
intent.setType(“image/png”);

十三、# Market 相关

1 //寻找某个应用
Uri uri = Uri.parse(“market://search?q=pname:pkg_name”);
Intent it = new Intent(Intent.ACTION_VIEW, uri);
startActivity(it);
//where pkg_name is the full package path for an application
2 //显示某个应用的相关信息
Uri uri = Uri.parse(“market://details?id=app_id”);
Intent it = new Intent(Intent.ACTION_VIEW, uri);
startActivity(it);
//where app_id is the application ID, find the ID
//by clicking on your application on Market home
//page, and notice the ID from the address bar

十四、路径规划

Uri uri = Uri.parse(“http://maps.google.com/maps?f=d&saddr=startLat%20startLng&daddr=endLat%20endLng&hl=en”);
Intent it = new Intent(Intent.ACTION_VIEW, uri);
startActivity(it);
//where startLat, startLng, endLat, endLng are a long with 6 decimals like: 50.123456

十五、安装指定apk

public void setupAPK(String apkname){
        String fileName = Environment.getExternalStorageDirectory() + "/" + apkname;
        Intent intent = new Intent(Intent.ACTION_VIEW);
        intent.setDataAndType(Uri.fromFile(new File(fileName)), "application/vnd.android.package-archive");
        mService.startActivity(intent);
}

十六、进入联系人页面

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

十七、查看指定联系人

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

十八、调用相册

public static final String MIME_TYPE_IMAGE_JPEG = "image/*"; 
public static final int ACTIVITY_GET_IMAGE = 0; 
Intent getImage = new Intent(Intent.ACTION_GET_CONTENT); 
getImage.addCategory(Intent.CATEGORY_OPENABLE); 
getImage.setType(MIME_TYPE_IMAGE_JPEG); 
startActivityForResult(getImage, ACTIVITY_GET_IMAGE); 

十九、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); 

今天碰到一个bug很奇怪，不知道为什么，记录一下。

从sim卡到联系人，在选取全部导入时，用while(mCursor.moveToNext()){....}。按power键，奇怪的事情就来了，通过打log发现，mCursor又从头开始取了。每次按power键都会从头开始取。看代码上就经过了一个onPause，这个函数也没有做什么操作，就一个super.onPause();。

但是把while(mCursor.moveToNext())改成

for(int i = 0;i <mCursor.getCount(); i++){
mCursor.moveToPosition(i);
....
};

就不会有这些问题。