Android 使用Intent启动常用的应用与服务

由地图参数显示地图:
Uri uri = Uri.parse("geo:38.899533,-77.036476");
Intent intent = new Intent(Intent.Action_VIEW,uri);
startActivintenty(intent);

拨打电话，调用拨号程序:
Uri uri = Uri.parse("tel:13800138000");
Intent intent = new Intent(Intent.ACTION_DIAL, uri);
startActivintenty(intent);

调用短信程序发送短信
Uri uri = Uri.parse("smsto:13800138000");
Intent intent = new Intent(Intent.ACTION_SENDTO, uri);
intent.putExtra("sms_body", "linuxidc.COM");
startActivintenty(intent);

调用彩信服务发送彩信
Uri uri = Uri.parse("content://media/external/images/media/exp");
Intent intent = new Intent(Intent.ACTION_SEND);
intent.putExtra("sms_body", "linuxidc.COM");
intent.putExtra(Intent.EXTRA_STREAM, uri);
intent.setType("image/png");
startActivintenty(intent);

Intent intent = new Intent(Intent.ACTION_SEND);
intent.putExtra(Intent.EXTRA_EMAIL, "android.sz@live.com");
intent.putExtra(Intent.EXTRA_TEXT, "邮件内容。");
intent.setType("text/plain");
startActivintenty(Intent.createChooser(intent, "Choose Email Client"));

添加邮件附件内容
Intent intent = new Intent(Intent.ACTION_SEND);
intent.putExtra(Intent.EXTRA_SUBJECT, "主题");
intent.putExtra(Intent.EXTRA_STREAM, "file:///sdcard/linuxidc.mp3");
sendIntent.setType("audio/mp3");
startActivintenty(Intent.createChooser(intent, "Choose Email Client"));

播放mp4多媒体文件
Intent intent = new Intent(Intent.ACTION_VIEW);
Uri uri = Uri.parse("file:///sdcard/linuxidc.mp3");
intent.setDataAndType(uri, "audio/mp3");
startActivintenty(intent);