Android Intent的用法总结

 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:[e-mail]");
    Intent it = new Intent(Intent.ACTION_SENDTO, uri);
    startActivity(it);

    Intent it = new Intent(Intent.ACTION_SEND);
    it.putExtra(Intent.EXTRA_EMAIL, "[e-mail]");
    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={"[e-mail]"};   
    String[] ccs={"[e-mail]"};   
    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);