Android Intent最全用法

1.无参数Activity跳转 


Intent it = new Intent(Activity.this, Activity2.class);   


startActivity(it);   










2.向下一个Activity传递数据（使用Bundle或Intent.putExtras） 


Intent it = new Intent(Activity.this, Activity2.class);   


Bundle bundle=new Bundle();   


bundle.putString("name", "This is from MainActivity!");   


it.putExtras(bundle); // it.putExtra(“test”, "shuju”);   


startActivity(it);   // startActivityForResult(it,REQUEST_CODE);  


相应的对于数据的获取可以采用： 


Bundle bundle=getIntent().getExtras();   


String name=bundle.getString("name");  










如果activity设为singletask，那么接收数据时也要实现onNewIntent()方法


3.向上一个Activity返回结果（使用setResult，针对startActivityForResult(it,REQUEST_CODE)启动的










Activity） 


Intent intent=getIntent();   


Bundle bundle2=new Bundle();   


bundle2.putString("name", "This is from ShowMsg!");   


intent.putExtras(bundle2);   


setResult(RESULT_OK, intent);  


4.回调上一个Activity的结果处理函数（onActivityResult） 


@Override  


    protected void onActivityResult(int requestCode, int resultCode, Intent data) {   


        // TODO Auto-generated method stub   


        super.onActivityResult(requestCode, resultCode, data);   


        if (requestCode==REQUEST_CODE){   


            if(resultCode==RESULT_CANCELED)   


                  setTitle("cancle");   


            else if (resultCode==RESULT_OK) {   


                 String temp=null;   


                 Bundle bundle=data.getExtras();   


                 if(bundle!=null)   temp=bundle.getString("name");   


                 setTitle(temp);   


            }   


        }   


    }  


5、显示网页 


Uri uri = Uri.parse("http://google.com");     


Intent it = new Intent(Intent.ACTION_VIEW, uri);     


startActivity(it);      


6、显示地图 


Uri uri = Uri.parse("geo:38.899533,-77.036476");     


Intent it = new Intent(Intent.ACTION_VIEW, uri);      


startActivity(it);      


//其他 geo URI 


//geo:latitude,longitude     


//geo:latitude,longitude?z=zoom     


//geo:0,0?q=my+street+address     


//geo:0,0?q=business+near+city     


//google.streetview:cbll=lat,lng&cbp=1,yaw,,pitch,zoom&mz=mapZoom   


7、路径规划 


Uri uri = Uri.parse("http://maps.google.com/maps?f=d&saddr=startLat%0startLng&daddr=endLat%


0endLng&hl=en");     


Intent it = new Intent(Intent.ACTION_VIEW, uri);     


startActivity(it);     


//where startLat, startLng, endLat, endLng are a long with 6 decimals like: 50.123456  


   


8、打电话


// 叫出拨号程序


Uri uri = Uri.parse("tel:0800000123");


Intent it = new Intent(Intent.ACTION_DIAL, uri);


startActivity(it);


// 直接打电话出去


Uri uri = Uri.parse("tel:0800000123");


Intent it = new Intent(Intent.ACTION_CALL, uri);


startActivity(it);


9、传送SMS/MMS


// 传送SMS


Uri uri = Uri.parse("smsto://0800000123");


Intent it = new Intent(Intent.ACTION_SENDTO, uri);


it.putExtra("sms_body", "The SMS text");


startActivity(it);


// 传送 MMS


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);


10、发送 Email（三种方法）


  


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"));  


Uri uri = Uri.parse("mailto:fengsheng.studio@hotmail.com");            


   Intent it = new Intent(Intent.ACTION_SENDTO, uri);  


１１、传送附件


Intent intent = new Intent();


intent.setAction(Intent.ACTION_SEND);


intent.setType(mimeType);


intent.putExtra(Intent.EXTRA_STREAM, uri);


startActivity(intent);


// 以上有两个变量需要说明:


// 1. mimeType: 如果是图片,则为"image/*",如果是音频,则为"audio/*",如果是视频,则为"video/*"


// 2. uri:如果是直接读取到文件路径并发送,则为Uri.fromFile(new File(filePath));


// 如果是从数据库中查循出来的uri,则直接传入即可.


１２、播放多媒体（两种方法）


Uri uri = Uri.parse("file:///sdcard/song.mp3");


Intent it = new Intent(Intent.ACTION_VIEW, uri);


it.setType("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);


Market 相关 


１３、寻找某个应用/显示某个应用的相关信息   


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 


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


       


14、打开一个应用程序 


ComponentName 两个参数一个是包名 一个是包下的主类


final Intent intent = new Intent(Intent.ACTION_MAIN, null);


intent.addCategory(Intent.CATEGORY_LAUNCHER);


final ComponentName cn = new ComponentName("com.android.settings",


"com.android.settings.fuelgauge.PowerUsageSummary");


intent.setComponent(cn);


intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);


startActivity(intent);


Uninstall 应用程序 


Uri uri = Uri.fromParts("package", strPackageName, null);


Intent it = new Intent(Intent.ACTION_DELETE, uri);


startActivity(it);


14、返回桌面 


Intent unMyIntent = new Intent(Intent.ACTION_MAIN);


unMyIntent.addCategory(Intent.CATEGORY_HOME);


startActivity(unMyIntent);


15、调用程序打开相应文件


在写文件管理系统时会用到各种打开不同格式的文件的需求，由于Android系统默认内置了一些可以打开










的系统应用，但还是不能满足需求，比如打开视频文件、word等，需要安装相应的播放


软件才可以使用，这时程序会通过Intent查找可以使用的软件


实现通过代码打开一个文件需要2部分，一部分是要获取到不同文件的后缀，以便根据需求匹配相应的










Intent，另一个就是不同格式的文件打开的Intent不同


1、在values目录下定义后缀数组文件fileendings


<?xml version="1.0" encoding="utf-8"?>


<resources>


<array name="fileEndingImage">


        <item>.png</item>


        <item>.gif</item>


        <item>.jpg</item>


        <item>.jpeg</item>


        <item>.bmp</item>


    </array>


<array name="fileEndingAudio">


        <item>.mp3</item>


        <item>.wav</item>


        <item>.ogg</item>


        <item>.midi</item>


    </array>


<array name="fileEndingVideo">


        <item>.mp4</item>


        <item>.rmvb</item>


        <item>.avi</item>


        <item>.flv</item>


    </array>


<array name="fileEndingPackage">


        <item>.jar</item>


        <item>.zip</item>


        <item>.rar</item>


        <item>.gz</item>


        <item>.apk</item>


        <item>.img</item>


    </array>


<array name="fileEndingWebText">


        <item>.htm</item>


        <item>.html</item>


        <item>.php</item>


        <item>.jsp</item>


    </array>


<array name="fileEndingText">


        <item>.txt</item>


        <item>.java</item>


        <item>.c</item>


        <item>.cpp</item>


        <item>.py</item>


        <item>.xml</item>


        <item>.json</item>


        <item>.log</item>


    </array>


<array name="fileEndingWord">


    <item>.doc</item>


    <item>.docx</item>


</array>


<array name="fileEndingExcel">


    <item>.xls</item>


    <item>.xlsx</item>


</array>


<array name="fileEndingPPT">


    <item>.ppt</item>


    <item>.pptx</item>


</array>


<array name="fileEndingPdf">


    <item>.pdf</item>


</array>


</resources>


2、定义OpenFiles工具类，只需传输File参数即可，然后通过返回的Intent打开文件   


       


public class OpenFiles {


     //android获取一个用于打开HTML文件的intent


       public static Intent getHtmlFileIntent(File file)


       {


Uri uri = Uri.parse(file.toString()).buildUpon().encodedAuthority










("com.android.htmlfileprovider").scheme("content").encodedPath(file.toString()).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(File file)


       {


           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(file);


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


           return intent;


       }


       //android获取一个用于打开PDF文件的intent


       public static Intent getPdfFileIntent(File file)


       {


         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(file);


         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(File file)


     {    


       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(file);


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


       return intent;


     }


    


     //android获取一个用于打开音频文件的intent


       public static Intent getAudioFileIntent(File file)


       {


         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(file);


         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(File file)


       {


         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(file);


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


         return intent;


       }


    


    


       //android获取一个用于打开CHM文件的intent


       public static Intent getChmFileIntent(File file)


       {


         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(file);


         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(File file)


       {


         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(file);


         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(File file)


       {


         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(file);


         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(File file)


       {


         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(file);


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


         return intent;


       }


       //android获取一个用于打开apk文件的intent


       public static Intent getApkFileIntent(File file)


       {


           Intent intent = new Intent();  


           intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);  


           intent.setAction(android.content.Intent.ACTION_VIEW);  


           intent.setDataAndType(Uri.fromFile(file),  "application/vnd.android.package-










archive");  


           return intent;


       }


}


3、定义用于检查要打开的文件的后缀是否在遍历后缀数组中


private boolean checkEndsWithInStringArray(String checkItsEnd, 


                    String[] fileEndings){


        for(String aEnd : fileEndings){


            if(checkItsEnd.endsWith(aEnd))


                return true;


        }


        return false;


    }


4、通过调用OpenFiles类返回的Intent，打开相应的文件


if(currentPath!=null&¤tPath.isFile())


                {


                    String fileName = currentPath.toString();


                    Intent intent;


                    if(checkEndsWithInStringArray(fileName, getResources().


                            getStringArray(R.array.fileEndingImage))){


                        intent = OpenFiles.getImageFileIntent(currentPath);


                        startActivity(intent);


                    }else if(checkEndsWithInStringArray(fileName, getResources().


                            getStringArray(R.array.fileEndingWebText))){


                        intent = OpenFiles.getHtmlFileIntent(currentPath);


                        startActivity(intent);


                    }else if(checkEndsWithInStringArray(fileName, getResources().


                            getStringArray(R.array.fileEndingPackage))){


                        intent = OpenFiles.getApkFileIntent(currentPath);


                        startActivity(intent);


















                    }else if(checkEndsWithInStringArray(fileName, getResources().


                            getStringArray(R.array.fileEndingAudio))){


                        intent = OpenFiles.getAudioFileIntent(currentPath);


                        startActivity(intent);


                    }else if(checkEndsWithInStringArray(fileName, getResources().


                            getStringArray(R.array.fileEndingVideo))){


                        intent = OpenFiles.getVideoFileIntent(currentPath);


                        startActivity(intent);


                    }else if(checkEndsWithInStringArray(fileName, getResources().


                            getStringArray(R.array.fileEndingText))){


                        intent = OpenFiles.getTextFileIntent(currentPath);


                        startActivity(intent);


                    }else if(checkEndsWithInStringArray(fileName, getResources().


                            getStringArray(R.array.fileEndingPdf))){


                        intent = OpenFiles.getPdfFileIntent(currentPath);


                        startActivity(intent);


                    }else if(checkEndsWithInStringArray(fileName, getResources().


                            getStringArray(R.array.fileEndingWord))){


                        intent = OpenFiles.getWordFileIntent(currentPath);


                        startActivity(intent);


                    }else if(checkEndsWithInStringArray(fileName, getResources().


                            getStringArray(R.array.fileEndingExcel))){


                        intent = OpenFiles.getExcelFileIntent(currentPath);


                        startActivity(intent);


                    }else if(checkEndsWithInStringArray(fileName, getResources().


                            getStringArray(R.array.fileEndingPPT))){


                        intent = OpenFiles.getPPTFileIntent(currentPath);


                        startActivity(intent);


                    }else


                    {


                        showMessage("无法打开，请安装相应的软件！");


                    }


                }else


                {


                    showMessage("对不起，这不是文件！");


                }