explicit adj. 明确的；清楚的；直率的；详述的
implicit adj. 含蓄的；暗示的；盲从的
https://developer.android.com/training/basics/intents/sending.html
embedded adj. 嵌入式的；植入的；内含的
https://developer.android.com/training/basics/intents/result.html
Google推荐的打开地图的方案
// Build the intent
Uri location = Uri.parse("geo:0,0?q=1600+Amphitheatre+Parkway,+Mountain+View,+California");
Intent mapIntent = new Intent(Intent.ACTION_VIEW, location);
// Verify it resolves
PackageManager packageManager = getPackageManager();
List activities = packageManager.queryIntentActivities(mapIntent, 0);
boolean isIntentSafe = activities.size() > 0;
// Start an activity if it's safe
if (isIntentSafe) { startActivity(mapIntent); }
谷歌官方推荐获取联系人方法
static final int PICK_CONTACT_REQUEST = 1;
// The request code
private void pickContact() {
Intent pickContactIntent = new Intent(Intent.ACTION_PICK, Uri.parse("content://contacts"));
pickContactIntent.setType(Phone.CONTENT_TYPE);
startActivityForResult(pickContactIntent, PICK_CONTACT_REQUEST); }
