Intent的简单封装

底部献上利用Intent打开各种文件的方法

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
/**  * intent的跳转  * @author Administrator  *  */ public class IntentUtils {public static IntentUtils instence;public static IntentUtils getInstence() {if (null == instence) {instence = new IntentUtils();}return instence;}private IntentUtils() {}/**  * 不带参数的跳转  *  * @param fromContext  * @param cls  * 泛型  */  public void intent(Context fromContext, Class<?> cls) {Intent intent = new Intent(fromContext, cls);fromContext.startActivity(intent);}/**  * 带参数的跳转  *  * @param fromContext  * @param cls  * 泛型  */  public void intent(Context fromContext, Class<?> cls,Bundle bb) {Intent intent = new Intent(fromContext, cls);intent.putExtras(bb);fromContext.startActivity(intent);}/**  * 封装 startActivityForResult 无带参数传?? </br>  * Same as calling  * {
    @link #startActivityForResult(Activity, Class, int, Bundle)}  *  * @param fromClass  * @param toClass  * @param requestCode  */  public void startActivityForResult(Activity fromClass, Class<?> toClass, int requestCode) {startActivityForResult(fromClass, toClass, requestCode, null);}/**  * 封装 startActivityForResult 带参数传??  *  * @param fromClass  * @param toClass  * @param requestCode  * @param data  * 参数传??  */  public void startActivityForResult(Activity fromClass, Class<?> toClass, int requestCode, Bundle data) {Intent intent = new Intent();intent.setClass(fromClass, toClass);if (null != data) {intent.putExtras(data);}fromClass.startActivityForResult(intent, requestCode);}/**  * 接收参数然后在返回数值  * @param fromContext 当前的activity  * @param bb  * @param RESULT_OK  */  public void setResult(Activity fromContext,Bundle bb,int RESULT_OK){Intent intent=new Intent();  intent.putExtras(bb);fromContext.setResult(RESULT_OK, intent);  fromContext.finish(); }
}

Intent intent = new Intent();  
	    //执行动作  
	    intent.setAction(Intent.ACTION_VIEW);  
	    //执行的数据类型  
	    intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive"); //安裝打開apk
//	    intent.setDataAndType(uri,"*/*");  //打开所有文件
//	    intent.setDataAndType(uri, "video/*");  //打开video
//	    intent.setDataAndType(uri, "audio/*"); //打开audio
//	    intent.setDataAndType(uri2, "text/html");//打开h5界面
//	    intent.setDataAndType(uri, "image/*"); //打开image文件
//	    intent.setDataAndType(uri, "application/vnd.ms-powerpoint");  //打开ppt文件
//	    intent.setDataAndType(uri, "application/vnd.ms-excel");  //打开excel
//	    intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);intent.setDataAndType(uri, "application/msword");  //打開word
//	    intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);intent.setDataAndType(uri, "application/x-chm"); //打開chm
//	    intent.setDataAndType(uri1, "text/plain");  //打开文本文件
//	    intent.setDataAndType(uri, "application/pdf");  //打开pdfstartActivity(intent );