android中一些常用的VIEW动作类型

// 实例一个intent对象
  Intent intent = new Intent();
  // 设置动作事件为Action_View;
  intent.setAction(android.content.Intent.ACTION_VIEW);
  String fileName = file.getName();
  if (justFileEndWith(fileName, this.getResources().getStringArray(
    R.array.fileEndWithImage))) {
   intent.setDataAndType(Uri.fromFile(file), "image/*");
  } else if (justFileEndWith(fileName, this.getResources()
    .getStringArray(R.array.fileEndWithAudio))) {
   intent.setDataAndType(Uri.fromFile(file), "audio/*");
  } else if (justFileEndWith(fileName, this.getResources()
    .getStringArray(R.array.fileEndWithVideo))) {
   intent.setDataAndType(Uri.fromFile(file), "video/*");
  }
  else if(fileName.endsWith(".apk"))
  {
   //安装APK文件
   intent.setDataAndType(Uri.fromFile(file),"application/vnd.android.package-archive");
  }
  else if(fileName.endsWith(".txt"))
  {
   intent.setDataAndType(Uri.fromFile(file),"txt/*");
  }
  this.startActivity(intent);