android中Intent的介绍和常见用法总结

16lz 2021-01-24

1.调用拨号程序
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//给移动客服10086拨打电话
Uriuri=Uri.parse("tel:10086");
Intentintent=newIntent(Intent.ACTION_DIAL,uri);
startActivity(intent);

2. 发送短信或彩信
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//给10086发送内容为“Hello”的短信
Uriuri=Uri.parse("smsto:10086");
Intentintent=newIntent(Intent.ACTION_SENDTO,uri);
intent.putExtra("sms_body","Hello");
startActivity(intent);
//发送彩信（相当于发送带附件的短信）
Intentintent=newIntent(Intent.ACTION_SEND);
intent.putExtra("sms_body","Hello");
Uriuri=Uri.parse("content://media/external/images/media/23");
intent.putExtra(Intent.EXTRA_STREAM,uri);
intent.setType("image/png");
startActivity(intent);

3.通过浏览器打开网页
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//打开Google主页
Uriuri=Uri.parse("http://www.google.com");
Intentintent=newIntent(Intent.ACTION_VIEW,uri);
startActivity(intent);

4.发送电子邮件
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//给someone@domain.com发邮件
Uriuri=Uri.parse("mailto:someone@domain.com");
Intentintent=newIntent(Intent.ACTION_SENDTO,uri);
startActivity(intent);
//给someone@domain.com发邮件发送内容为“Hello”的邮件
Intentintent=newIntent(Intent.ACTION_SEND);
intent.putExtra(Intent.EXTRA_EMAIL,"someone@domain.com");
intent.putExtra(Intent.EXTRA_SUBJECT,"Subject");
intent.putExtra(Intent.EXTRA_TEXT,"Hello");
intent.setType("text/plain");
startActivity(intent);
//给多人发邮件
Intentintent=newIntent(Intent.ACTION_SEND);
String[]tos={"1@abc.com","2@abc.com"};//收件人
String[]ccs={"3@abc.com","4@abc.com"};//抄送
String[]bccs={"5@abc.com","6@abc.com"};//密送
intent.putExtra(Intent.EXTRA_EMAIL,tos);
intent.putExtra(Intent.EXTRA_CC,ccs);
intent.putExtra(Intent.EXTRA_BCC,bccs);
intent.putExtra(Intent.EXTRA_SUBJECT,"Subject");
intent.putExtra(Intent.EXTRA_TEXT,"Hello");
intent.setType("message/rfc822");
startActivity(intent);

5.显示地图与路径规划
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//打开Google地图中国北京位置（北纬39.9，东经116.3）
Uriuri=Uri.parse("geo:39.9,116.3");
Intentintent=newIntent(Intent.ACTION_VIEW,uri);
startActivity(intent);
//路径规划：从北京某地（北纬39.9，东经116.3）到上海某地（北纬31.2，东经121.4）
Uriuri=Uri.parse("http://maps.google.com/maps?f=d&saddr=39.9116.3&daddr=31.2121.4");
Intentintent=newIntent(Intent.ACTION_VIEW,uri);
startActivity(intent);

6.播放多媒体
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Intentintent=newIntent(Intent.ACTION_VIEW);
Uriuri=Uri.parse("file:///sdcard/foo.mp3");
intent.setDataAndType(uri,"audio/mp3");
startActivity(intent);
Uriuri=Uri.withAppendedPath(MediaStore.Audio.Media.INTERNAL_CONTENT_URI,"1");
Intentintent=newIntent(Intent.ACTION_VIEW,uri);
startActivity(intent);

7.拍照
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//打开拍照程序
Intentintent=newIntent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent,0);
//取出照片数据
Bundleextras=intent.getExtras();
Bitmapbitmap=(Bitmap)extras.get("data");

8.获取并剪切图片
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//获取并剪切图片
Intentintent=newIntent(Intent.ACTION_GET_CONTENT);
intent.setType("image/*");
intent.putExtra("crop","true");//开启剪切
intent.putExtra("aspectX",1);//剪切的宽高比为1：2
intent.putExtra("aspectY",2);
intent.putExtra("outputX",20);//保存图片的宽和高
intent.putExtra("outputY",40);
intent.putExtra("output",Uri.fromFile(newFile("/mnt/sdcard/temp")));//保存路径
intent.putExtra("outputFormat","JPEG");//返回格式
startActivityForResult(intent,0);
//剪切特定图片
Intentintent=newIntent("com.android.camera.action.CROP");
intent.setClassName("com.android.camera","com.android.camera.CropImage");
intent.setData(Uri.fromFile(newFile("/mnt/sdcard/temp")));
intent.putExtra("outputX",1);//剪切的宽高比为1：2
intent.putExtra("outputY",2);
intent.putExtra("aspectX",20);//保存图片的宽和高
intent.putExtra("aspectY",40);
intent.putExtra("scale",true);
intent.putExtra("noFaceDetection",true);
intent.putExtra("output",Uri.parse("file:///mnt/sdcard/temp"));
startActivityForResult(intent,0);

9.打开Google Market
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//打开GoogleMarket直接进入该程序的详细页面
Uriuri=Uri.parse("market://details?id="+"com.demo.app");
Intentintent=newIntent(Intent.ACTION_VIEW,uri);
startActivity(intent);

10.安装和卸载程序
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Uriuri=Uri.fromParts("package","com.demo.app",null);
Intentintent=newIntent(Intent.ACTION_DELETE,uri);
startActivity(intent);

11.进入设置界面
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//进入无线网络设置界面（其它可以举一反三）
Intentintent=newIntent(android.provider.Settings.ACTION_WIRELESS_SETTINGS);
startActivityForResult(intent,0);

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