Intent应该算是Android中特有的东西。你可以在Intent中指定程序要执行的动作(比如:view,edit,dial),以及程序执行到该动作时所需要的资料。都指定好后,只要调用startActivity(),Android系统会自动寻找最符合你指定要求的应用程序,并执行该程序。
下面列出几种Intent的用法
显示网页:
Uri uri = Uri.parse(\"http://www.google.com\");
Intent it = new Intent(Intent.ACTION_VIEW,uri);
startActivity(it);
显示地图:
Uri uri = Uri.parse(\"geo:38.899533,-77.036476\");
Intent it = new Intent(Intent.Action_VIEW,uri);
startActivity(it);
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);
拨打电话:
调用拨号程序
Uri uri = Uri.parse(\"tel:xxxxxx\");
Intent it = new Intent(Intent.ACTION_DIAL, uri);
startActivity(it);
Uri uri = Uri.parse(\"tel.xxxxxx\");
Intent it =new Intent(Intent.ACTION_CALL,uri);
要使用这个必须在配置文件中加入<uses-permission id=\"android.permission.CALL_PHONE\" />
发送SMS/MMS
调用发送短信的程序
Intent it = new Intent(Intent.ACTION_VIEW);
it.putExtra(\"sms_body\", \"The SMS text\");
it.setType(\"vnd.android-dir/mms-sms\");
startActivity(it);
发送短信
Uri uri = Uri.parse(\"smsto:0800000123\");
Intent it = new Intent(Intent.ACTION_SENDTO, uri);
it.putExtra(\"sms_body\", \"The SMS text\");
startActivity(it);
发送彩信
Uri uri = Uri.parse(\"content://media/external/images/media/23\");
Intent it = new Intent(Intent.ACTION_SEND);
it.putExtra(\"sms_body\", \"some text\");
it.putExtra(Intent.EXTRA_STREAM, uri);
it.setType(\"image/png\");
startActivity(it);
发送Email
Uri uri = Uri.parse(\"mailto:xxx@abc.com\");
Intent it = new Intent(Intent.ACTION_SENDTO, uri);
startActivity(it);
Intent it = new Intent(Intent.ACTION_SEND);
it.putExtra(Intent.EXTRA_EMAIL, \"me@abc.com\");
it.putExtra(Intent.EXTRA_TEXT, \"The email body text\");
it.setType(\"text/plain\");
startActivity(Intent.createChooser(it, \"Choose Email Client\"));
Intent it=new Intent(Intent.ACTION_SEND);
String[] tos={\"me@abc.com\"};
String[] ccs={\"you@abc.com\"};
it.putExtra(Intent.EXTRA_EMAIL, tos);
it.putExtra(Intent.EXTRA_CC, ccs);
it.putExtra(Intent.EXTRA_TEXT, \"The email body text\");
it.putExtra(Intent.EXTRA_SUBJECT, \"The email subject text\");
it.setType(\"message/rfc822\");
startActivity(Intent.createChooser(it, \"Choose Email Client\"));
添加附件
Intent it = new Intent(Intent.ACTION_SEND);
it.putExtra(Intent.EXTRA_SUBJECT, \"The email subject text\");
it.putExtra(Intent.EXTRA_STREAM, \"file:///sdcard/mysong.mp3\");
sendIntent.setType(\"audio/mp3\");
startActivity(Intent.createChooser(it, \"Choose Email Client\"));
播放多媒体
Intent it = new Intent(Intent.ACTION_VIEW);
Uri uri = Uri.parse(\"file:///sdcard/song.mp3\");
it.setDataAndType(uri, \"audio/mp3\");
startActivity(it);
Uri uri = Uri.withAppendedPath(MediaStore.Audio.Media.INTERNAL_CONTENT_URI, \"1\");
Intent it = new Intent(Intent.ACTION_VIEW, uri);
startActivity(it);
Uninstall 程序
Uri uri = Uri.fromParts(\"package\", strPackageName, null);
Intent it = new Intent(Intent.ACTION_DELETE, uri);
startActivity(it);