一.怎么去启动另一个应用程序
1.定义阴式的Intent
1>启动拨号:
Uri uri=Uri.parse("tel:010888888");
Intent callIntent=new Intent(Intent.ACTION_DIAL,uri);
2>浏览地图
// Map point based on address
Uri location = Uri.parse("geo:0,0?q=1600+Amphitheatre+Parkway,+Mountain+View,+California");
// Or map point based on latitude/longitude
// Uri location = Uri.parse("geo:37.422219,-122.08364?z=14"); // z param is zoom level
Intent mapIntent = new Intent(Intent.ACTION_VIEW, location);
3>访问浏览器
Uri uri=Uri.parse("http://www.baidu.com");
Intent webIntent=new Intent(Intent.ACTION_VIEW,uri);
4>发送emial
Intent emailIntent = new Intent(Intent.ACTION_SEND);
// The intent does not have a URI, so declare the "text/plain" MIME type
emailIntent.setType(HTTP.PLAIN_TEXT_TYPE);
emailIntent.putExtra(Intent.EXTRA_EMAIL, new String[] {"jon@example.com"}); // recipients
emailIntent.putExtra(Intent.EXTRA_SUBJECT, "Email subject");
emailIntent.putExtra(Intent.EXTRA_TEXT, "Email message text");
emailIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse("content://path/to/email/attachment"));
/ / You can also attach multiple items by passing an ArrayList of Uris
2检验是否存在接受当前Intent的app
PackageManager pm=getPackageManager();
List<ResolveInfo> activities = pm.queryIntentActivities(intent, 0);
boolean isIntentSafe = activities.size() > 0;
3 弹出app chooser
Intent choolserIntent=Intent.createChooser(Intent intent,String title);
二 从被访问App中获取结果数据
启动方式:由startActivity(),改为startActivityForResult();在源app 的Activity中实现onActivityResult()方法,从参数Intent data获取返回的数据。
三 如何实现第三方app访问您的app
1 定义Intent Filter,必须包含action,category标签,一般,使用:<category android:name="android.intent.category.DEFAULT"/>即可;data标签可选。
2 在需要被访问的Activity onCreate或者Onstart()方法中,处理第三方传递过来的Intent,如果需要回传数据,添加:setResult(int resultCode,Intent resultIntent),
或者setResult(int resultCode);

被折叠的 条评论
为什么被折叠?



