文件管理器——Android打开各种类型的文件方法

package com.hujing.filemanager.other;

import java.io.File;
import android.content.Intent;
import android.net.Uri;

public class IntentBuilder {

	public static Intent openFile(String filePath) {

		File file = new File(filePath);
		if (!file.exists())
			return null;
		/* 取得扩展名 */
		String end = file.getName().substring(file.getName().lastIndexOf(".") + 1, file.getName().length())
				.toLowerCase();
		/* 依扩展名的类型决定MimeType */
		if (end.equals("m4a") || end.equals("mp3") || end.equals("mid") || end.equals("xmf") || end.equals("ogg")
				|| end.equals("wav")) {
			return getMusicFileIntent(filePath);
		} else if (end.equals("3gp") || end.equals("mp4")) {
			return getVideoFileIntent(filePath);
		} else if (end.equals("jpg") || end.equals("gif") || end.equals("png") || end.equals("jpeg")
				|| end.equals("bmp")) {
			return getImageFileIntent(filePath);
		} else if (end.equals("apk")) {
			return getApkFileIntent(filePath);
		} else if (end.equals("ppt")) {
			return getPptFileIntent(filePath);
		} else if (end.equals("xls")) {
			return getExcelFileIntent(filePath);
		} else if (end.equals("doc")) {
			return getWordFileIntent(filePath);
		} else if (end.equals("pdf")) {
			return getPdfFileIntent(filePath);
		} else if (end.equals("chm")) {
			return getChmFileIntent(filePath);
		} else if (end.equals("txt")) {
			return getTextFileIntent(filePath, false);
		} else {
			return null;
		}
	}

	// Android获取一个用于打开所有类型文件的intent ，会调用手机安装的全部软件
	public static Intent getAllIntent(String param) {
		Intent intent = new Intent();
		intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
		intent.setAction(android.content.Intent.ACTION_VIEW);
		Uri uri = Uri.fromFile(new File(param));
		intent.setDataAndType(uri, "*/*");
		return intent;
	}

	// Android获取一个用于打开APK文件的intent
	public static Intent getApkFileIntent(String param) {

		Intent intent = new Intent();
		intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
		intent.setAction(android.content.Intent.ACTION_VIEW);
		Uri uri = Uri.fromFile(new File(param));
		intent.setDataAndType(uri, "application/vnd.android.package-archive");
		return intent;
	}

	// Android获取一个用于打开VIDEO 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 音频文件的intent
	public static Intent getMusicFileIntent(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)); // 通过file文件去获得content的uri
		intent.setDataAndType(uri, "audio/*");
		return intent;
	}

	// 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;
	}

	// 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;
	}

}