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 Android教程網 >> Android技術 >> Android開發實例 >> 安卓開發中intent打開文件詳解

安卓開發中intent打開文件詳解

編輯:Android開發實例

  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;

  //自定義android Intent類,

  //可用於獲取打開以下文件的intent

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

  示例:

  //這個不行,可能是因為PDF.apk程序沒有權限訪問其它APK裡的asset資源文件,又或者是路徑寫錯?

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

  //下面這些都OK

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

  //Intent it = getHtmlFileIntent("/sdcard/tutorial.html");//SD卡主目錄,這樣也可以

  Intent it = getHtmlFileIntent("/system/etc/tutorial.html");//系統內部的etc目錄

  //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目錄下

  //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獲取一個用於打開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獲取一個用於打開圖片文件的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獲取一個用於打開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獲取一個用於打開文本文件的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獲取一個用於打開音頻文件的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獲取一個用於打開視頻文件的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獲取一個用於打開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獲取一個用於打開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獲取一個用於打開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獲取一個用於打開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;

  }

  }

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