Android URI简单介绍

就Android平台而言，URI主要分三个部分：scheme, authority and path。当中authority又分为host和port。格式例如以下：

scheme://host:port/path

举个实际的样例：

content://com.example.project:200/folder/subfolder/etc

\---------/  \---------------------------/ \---/ \--------------------------/

scheme                 host               port        path

                \--------------------------------/

                          authority   



如今大家应该知道data flag中那些属性的含义了吧，看下data flag

<data android:host="string"

      android:mimeType="string"

      android:path="string"

      android:pathPattern="string"

      android:pathPrefix="string"

      android:port="string"

      android:scheme="string" />

可是我们在程序中通常是不直接用URI来标识CP的，是的，正如我们通常见到的用定义的常量来标识。比如standard CP中的Contacts，我们就用Contacts.People.CONTENT_URI来标识Contacts CP中People这个表。那么要标识某个详细的人怎么办呢？ 这就用到了ContentUris.withAppendedId() 和 Uri.withAppendedPath()。比如我们要表示content://contacts/people/20，那么我们就能够用例如以下语句：

Uri uri = ContentUris.withAppendedId(People.CONTENT_URI, 20); 或者

Uri uri = Uri.withAppendedPath(People.CONTENT_URI, "20");

举些样例，如：

全部联系人的Uri： content://contacts/people

某个联系人的Uri: content://contacts/people/5

全部图片Uri: content://media/external

某个图片的Uri：content://media/external/images/media/4

以下是一些经常使用的Uri

显示网页:

  1. Uri uri = Uri.parse("http://www.google.com");

  2. Intent it = new Intent(Intent.ACTION_VIEW,uri);

  3. startActivity(it);



显示地图:

1. Uri uri = Uri.parse("geo:38.899533,-77.036476");

  2. Intent it = new Intent(Intent.Action_VIEW,uri);

  3. startActivity(it);



路径规划:

  1. Uri uri = Uri.parse("http://maps.google.com/maps?f=d&saddr=startLat%20startLng&daddr=endLat%20endLng&hl=en");

  2. Intent it = new Intent(Intent.ACTION_VIEW,URI);

  3. startActivity(it);



拨打电话:

调用拨号程序

  1. Uri uri = Uri.parse("tel:xxxxxx");

  2. Intent it = new Intent(Intent.ACTION_DIAL, uri);  

  3. startActivity(it);  

  1. Uri uri = Uri.parse("tel.xxxxxx");

  2. Intent it =new Intent(Intent.ACTION_CALL,uri);

  3. 要使用这个必须在配置文件里增加<uses-permission id="Android.permission.CALL_PHONE" />



发送SMS/MMS

调用发送短信的程序

  1. Intent it = new Intent(Intent.ACTION_VIEW);

  2. it.putExtra("sms_body", "The SMS text");

  3. it.setType("vnd.android-dir/mms-sms");

  4. startActivity(it);  

发送短信

  1. Uri uri = Uri.parse("smsto:0800000123");

  2. Intent it = new Intent(Intent.ACTION_SENDTO, uri);

  3. it.putExtra("sms_body", "The SMS text");

  4. startActivity(it);  

发送彩信

  1. Uri uri = Uri.parse("content://media/external/images/media/23");

  2. Intent it = new Intent(Intent.ACTION_SEND);

  3. it.putExtra("sms_body", "some text");

  4. it.putExtra(Intent.EXTRA_STREAM, uri);

  5. it.setType("image/png");

  6. startActivity(it);



发送Email

  1.

  2. Uri uri = Uri.parse("mailto:xxx@abc.com");

  3. Intent it = new Intent(Intent.ACTION_SENDTO, uri);

  4. startActivity(it);

  1. Intent it = new Intent(Intent.ACTION_SEND);

  2. it.putExtra(Intent.EXTRA_EMAIL, "me@abc.com");

  3. it.putExtra(Intent.EXTRA_TEXT, "The email body text");

  4. it.setType("text/plain");

  5. startActivity(Intent.createChooser(it, "Choose Email Client"));  

  1. Intent it=new Intent(Intent.ACTION_SEND);  

  2. String[] tos={"me@abc.com"};  

  3. String[] ccs={"you@abc.com"};  

  4. it.putExtra(Intent.EXTRA_EMAIL, tos);  

  5. it.putExtra(Intent.EXTRA_CC, ccs);  

  6. it.putExtra(Intent.EXTRA_TEXT, "The email body text");  

  7. it.putExtra(Intent.EXTRA_SUBJECT, "The email subject text");  

  8. it.setType("message/rfc822");  

  9. startActivity(Intent.createChooser(it, "Choose Email Client"));



加入附件

  1. Intent it = new Intent(Intent.ACTION_SEND);

  2. it.putExtra(Intent.EXTRA_SUBJECT, "The email subject text");

  3. it.putExtra(Intent.EXTRA_STREAM, "[url=]file:///sdcard/mysong.mp3[/url]");

  4. sendIntent.setType("audio/mp3");

  5. startActivity(Intent.createChooser(it, "Choose Email Client"));



播放多媒体

  1.  

  2. Intent it = new Intent(Intent.ACTION_VIEW);

  3. Uri uri = Uri.parse("[url=]file:///sdcard/song.mp3[/url]");

  4. it.setDataAndType(uri, "audio/mp3");

  5. startActivity(it);

  1. Uri uri = Uri.withAppendedPath(MediaStore.Audio.Media.INTERNAL_CONTENT_URI, "1");

  2. Intent it = new Intent(Intent.ACTION_VIEW, uri);

  3. startActivity(it);  



Uninstall 程序

  1. Uri uri = Uri.fromParts("package", strPackageName, null);

  2. Intent it = new Intent(Intent.ACTION_DELETE, uri);

  3. startActivity(it);



//调用相冊

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);



//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);



uninstall apk

/**未測试

Uri uninstallUri = Uri.fromParts("package", "xxx", null);

returnIt = new Intent(Intent.ACTION_DELETE, uninstallUri);

*/

Uri packageURI = Uri.parse("package:"+wistatmap);  

Intent uninstallIntent = new Intent(Intent.ACTION_DELETE, packageURI);  

startActivity(uninstallIntent);



install apk

Uri installUri = Uri.fromParts("package", "xxx", null);

returnIt = new Intent(Intent.ACTION_PACKAGE_ADDED, installUri);

play audio

Uri playUri = Uri.parse("[url=]file:///sdcard/download/everything.mp3[/url]");

returnIt = new Intent(Intent.ACTION_VIEW, playUri);



//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, "[url=]file:///sdcard/eoe.mp3[/url]");  

sendIntent.setType("audio/mp3");  

startActivity(Intent.createChooser(it, "Choose Email Client"));



//搜索应用

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



//进入联系人页面

Intent intent = new Intent();

intent.setAction(Intent.ACTION_VIEW);

intent.setData(People.CONTENT_URI);

startActivity(intent);



//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);