Android Intent的几种用法

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:

1. Uri uri = Uri.parse(“http://blog.csdn.com/sergeycao”);
2. Intent it  = new Intent(Intent.ACTION_VIEW,uri);
3. startActivity(it);

显示地图:

1. Uri uri = Uri.parse(“geo:36.9533,-87.076″);
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中加入<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:13901234567);
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

2. Uri uri = Uri.parse(“mailto:[e-mail]”);
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, “[e-mail]”);
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={“[e-mail]”};
3. String[] ccs={“[e-mail]”};
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”));

添加附件

1. Intent it = new Intent(Intent.ACTION_SEND);
2. it.putExtra(Intent.EXTRA_SUBJECT, “The email subject text”);
3. it.putExtra(Intent.EXTRA_STREAM, “file:///sdcard/sergeycao.mp3″);
4. sendIntent.setType(“audio/mp3″);
5. startActivity(Intent.createChooser(it, “Choose Email Client”));

播放多媒体

2. Intent it = new Intent(Intent.ACTION_VIEW);
3. Uri uri = Uri.parse(“file:///sdcard/sergeycao.mp3″);
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);