安卓-使用intent常见用法

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 import android.app.Activity;

  import android.content.Intent;

  import android.net.Uri;

  import android.net.Uri.Builder;

  import java.io.File;

  import android.content.Intent;

  //自定义android Intent类,

  //可用于获取打开以下文件的intent

  //PDF,PPT,WORD,EXCEL,CHM,HTML,TEXT,AUDIO,VIDEO

  示例:

  //这个不行,可能是因为PDF.apk程序没有权限访问其它APK里的asset资源文件,又或者是路径写错?

  //Intent it = getPdfFileIntent("file:///android_asset/helphelp.pdf");

  //下面这些都OK

  //Intent it = getHtmlFileIntent("/mnt/sdcard/tutorial.html");//SD卡主目录

  //Intent it = getHtmlFileIntent("/sdcard/tutorial.html");//SD卡主目录,这样也可以

  Intent it = getHtmlFileIntent("/system/etc/tutorial.html");//系统内部的etc目录

  //Intent it = getPdfFileIntent("/system/etc/helphelp.pdf");

  //Intent it = getWordFileIntent("/system/etc/help.doc");

  //Intent it = getExcelFileIntent("/mnt/sdcard/Book1.xls")

  //Intent it = getPptFileIntent("/mnt/sdcard/download/Android_PPT.ppt");//SD卡的download目录下

  //Intent it = getVideoFileIntent("/mnt/sdcard/ice.avi");

  //Intent it = getAudioFileIntent("/mnt/sdcard/ren.mp3");

  //Intent it = getImageFileIntent("/mnt/sdcard/images/001041580.jpg");

  //Intent it = getTextFileIntent("/mnt/sdcard/hello.txt",false);

  startActivity( it );

  public class MyIntent

  {

  //android获取一个用于打开HTML文件的intent

  public static Intent getHtmlFileIntent( String param )

  {

  Uri uri = Uri.parse(param ).buildUpon().encodedAuthority("com.android.htmlfileprovider").scheme("content").encodedPath(param ).build();

  Intent intent = new Intent("android.intent.action.VIEW");

  intent.setDataAndType(uri, "text/html");

  return intent;

  }

  //android获取一个用于打开图片文件的intent

  public static Intent getImageFileIntent( String param )

  {

  Intent intent = new Intent("android.intent.action.VIEW");

  intent.addCategory("android.intent.category.DEFAULT");

  intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

  Uri uri = Uri.fromFile(new File(param ));

  intent.setDataAndType(uri, "image/*");

  return intent;

  }

  //android获取一个用于打开PDF文件的intent

  public static Intent getPdfFileIntent( String param )

  {

  Intent intent = new Intent("android.intent.action.VIEW");

  intent.addCategory("android.intent.category.DEFAULT");

  intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

  Uri uri = Uri.fromFile(new File(param ));

  intent.setDataAndType(uri, "application/pdf");

  return intent;

  }

  //android获取一个用于打开文本文件的intent

  public static Intent getTextFileIntent( String param, boolean paramBoolean)

  {

  Intent intent = new Intent("android.intent.action.VIEW");

  intent.addCategory("android.intent.category.DEFAULT");

  intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

  if (paramBoolean)

  {

  Uri uri1 = Uri.parse(param );

  intent.setDataAndType(uri1, "text/plain");

  }

  else

  {

  Uri uri2 = Uri.fromFile(new File(param ));

  intent.setDataAndType(uri2, "text/plain");

  }

  return intent;

  }

  //android获取一个用于打开音频文件的intent

  public static Intent getAudioFileIntent( String param )

  {

  Intent intent = new Intent("android.intent.action.VIEW");

  intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

  intent.putExtra("oneshot", 0);

  intent.putExtra("configchange", 0);

  Uri uri = Uri.fromFile(new File(param ));

  intent.setDataAndType(uri, "audio/*");

  return intent;

  }

  //android获取一个用于打开视频文件的intent

  public static Intent getVideoFileIntent( String param )

  {

  Intent intent = new Intent("android.intent.action.VIEW");

  intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

  intent.putExtra("oneshot", 0);

  intent.putExtra("configchange", 0);

  Uri uri = Uri.fromFile(new File(param ));

  intent.setDataAndType(uri, "video/*");

  return intent;

  }

  //android获取一个用于打开CHM文件的intent

  public static Intent getChmFileIntent( String param )

  {

  Intent intent = new Intent("android.intent.action.VIEW");

  intent.addCategory("android.intent.category.DEFAULT");

  intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

  Uri uri = Uri.fromFile(new File(param ));

  intent.setDataAndType(uri, "application/x-chm");

  return intent;

  }

  //android获取一个用于打开Word文件的intent

  public static Intent getWordFileIntent( String param )

  {

  Intent intent = new Intent("android.intent.action.VIEW");

  intent.addCategory("android.intent.category.DEFAULT");

  intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

  Uri uri = Uri.fromFile(new File(param ));

  intent.setDataAndType(uri, "application/msword");

  return intent;

  }

  //android获取一个用于打开Excel文件的intent

  public static Intent getExcelFileIntent( String param )

  {

  Intent intent = new Intent("android.intent.action.VIEW");

  intent.addCategory("android.intent.category.DEFAULT");

  intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

  Uri uri = Uri.fromFile(new File(param ));

  intent.setDataAndType(uri, "application/vnd.ms-excel");

  return intent;

  }

  //android获取一个用于打开PPT文件的intent

  public static Intent getPptFileIntent( String param )

  {

  Intent intent = new Intent("android.intent.action.VIEW");

  intent.addCategory("android.intent.category.DEFAULT");

  intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

  Uri uri = Uri.fromFile(new File(param ));

  intent.setDataAndType(uri, "application/vnd.ms-powerpoint");

  return intent;

  }

  }



下面列出几种Intent的用法
显示网页:
Uri uri = Uri.parse("http://www.google.com");
Intent it  = new Intent(Intent.ACTION_VIEW,uri);
startActivity(it);
显示地图:
Uri uri = Uri.parse("geo:38.899533,-77.036476");
Intent it = new Intent(Intent.Action_VIEW,uri);
startActivity(it);
路径规划:
Uri uri = Uri.parse("http://maps.google.com/maps?f=dsaddr=startLat%20startLng&daddr=endLat%20endLng&hl=en");
Intent it = new Intent(Intent.ACTION_VIEW,URI);
startActivity(it);
拨打电话:
调用拨号程序
Uri uri = Uri.parse("tel:xxxxxx");
Intent it = new Intent(Intent.ACTION_DIAL, uri);
startActivity(it);
Uri uri = Uri.parse("tel.xxxxxx");
Intent it =new Intent(Intent.ACTION_CALL,uri);
要使用这个必须在配置文件 中加入
发送SMS/MMS
调用发送短信的程序
Intent it = new Intent(Intent.ACTION_VIEW);
it.putExtra("sms_body", "The SMS text");
it.setType("vnd.android-dir/mms-sms");
startActivity(it);
发送短信
Uri uri = Uri.parse("smsto:0800000123");
Intent it = new Intent(Intent.ACTION_SENDTO, uri);
it.putExtra("sms_body", "The SMS text");
startActivity(it);
发送彩信
Uri uri = Uri.parse("content://media/external/images/media/23");
Intent it = new Intent(Intent.ACTION_SEND);
it.putExtra("sms_body", "some text");
it.putExtra(Intent.EXTRA_STREAM, uri);
it.setType("image/png");
startActivity(it);
发送Email
Uri uri = Uri.parse("mailto:xxx@abc.com");
Intent it = new Intent(Intent.ACTION_SENDTO, uri);
startActivity(it);
Intent it = new Intent(Intent.ACTION_SEND);
it.putExtra(Intent.EXTRA_EMAIL, "me@abc.com");
it.putExtra(Intent.EXTRA_TEXT, "The email body text");
it.setType("text/plain");
startActivity(Intent.createChooser(it, "Choose Email Client"));
Intent it=new Intent(Intent.ACTION_SEND);
String[] tos={"me@abc.com"};
String[] ccs={"you@abc.com"};
it.putExtra(Intent.EXTRA_EMAIL, tos);
it.putExtra(Intent.EXTRA_CC, ccs);
it.putExtra(Intent.EXTRA_TEXT, "The email body text");
it.putExtra(Intent.EXTRA_SUBJECT, "The email subject text");
it.setType("message/rfc822");
startActivity(Intent.createChooser(it, "Choose Email Client"));
添加附件
Intent it = new Intent(Intent.ACTION_SEND);
it.putExtra(Intent.EXTRA_SUBJECT, "The email subject text");
it.putExtra(Intent.EXTRA_STREAM, "file:///sdcard/mysong.mp3");
sendIntent.setType("audio/mp3");
startActivity(Intent.createChooser(it, "Choose Email Client"));
播放多媒体
Intent it = new Intent(Intent.ACTION_VIEW);
Uri uri = Uri.parse("file:///sdcard/song.mp3");
it.setDataAndType(uri, "audio/mp3");
startActivity(it);
Uri uri = Uri.withAppendedPath(MediaStore.Audio.Media.INTERNAL_CONTENT_URI, "1");
Intent it = new Intent(Intent.ACTION_VIEW, uri);
startActivity(it);
Uninstall 程序
Uri uri = Uri.fromParts("package", strPackageName, null);
Intent it = new Intent(Intent.ACTION_DELETE, uri);
startActivity(it);
uninstall apk
Uri uninstallUri = Uri.fromParts("package", "xxx", null);
returnIt = new Intent(Intent.ACTION_DELETE, uninstallUri);
install apk
Uri installUri = Uri.fromParts("package", "xxx", null);
returnIt = new Intent(Intent.ACTION_PACKAGE_ADDED, installUri);
play audio
Uri playUri = Uri.parse("file:///sdcard/download/everything.mp3");
returnIt = new Intent(Intent.ACTION_VIEW, playUri);
//发送附件
Intent it = new Intent(Intent.ACTION_SEND);
it.putExtra(Intent.EXTRA_SUBJECT, "The email subject text");
it.putExtra(Intent.EXTRA_STREAM, "file:///sdcard/eoe.mp3");
sendIntent.setType("audio/mp3");
startActivity(Intent.createChooser(it, "Choose Email Client"));
//搜索应用
Uri uri = Uri.parse("market://search?q=pname:pkg_name");
Intent it = new Intent(Intent.ACTION_VIEW, uri);
startActivity(it);
//where pkg_name is the full package path for an application
//显示指定应用的详细页面(这个好像不支持了,找不到app_id)
Uri uri = Uri.parse("market://details?id=app_id");
Intent it = new Intent(Intent.ACTION_VIEW, uri);
startActivity(it);
//where app_id is the application ID, find the ID
//by clicking on your application on Market home
//page, and notice the ID from the address bar

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