Intent的一些用法（不断更新）

Intent用法实例

1.无参数Activity跳转

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

 


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

Intent it = new Intent(Activity.Main.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);

对于数据的获取可以采用：

Bundle bundle=getIntent().getExtras();
String name=bundle.getString("name");

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);
            }
        }
    }

下面是转载来的其他的一些Intent用法实例（转自javaeye）

显示网页

1. Uri uri = Uri.parse("http://google.com");  
   2. Intent it = new Intent(Intent.ACTION_VIEW, uri);  
   3. startActivity(it); 

  
显示地图

1. Uri uri = Uri.parse("geo:38.899533,-77.036476");  
   2. Intent it = new Intent(Intent.ACTION_VIEW, uri);   
   3. startActivity(it);   
   4. //其他 geo URI 範例  
   5. //geo:latitude,longitude  
   6. //geo:latitude,longitude?z=zoom  
   7. //geo:0,0?q=my+street+address  
   8. //geo:0,0?q=business+near+city  
   9. //google.streetview:cbll=lat,lng&cbp=1,yaw,,pitch,zoom&mz=mapZoom 

  

路径规划

1. Uri uri = Uri.parse("http://maps.google.com/maps?f=d&saddr=startLat%20startLng&daddr=endLat%20endLng&hl=en");  
   2. Intent it = new Intent(Intent.ACTION_VIEW, uri);  
   3. startActivity(it);  
   4. //where startLat, startLng, endLat, endLng are a long with 6 decimals like: 50.123456  

  
打电话

1. //叫出拨号程序 
   2. Uri uri = Uri.parse("tel:0800000123");  
   3. Intent it = new Intent(Intent.ACTION_DIAL, uri);  
   4. startActivity(it);  
   1. //直接打电话出去  
   2. Uri uri = Uri.parse("tel:0800000123");  
   3. Intent it = new Intent(Intent.ACTION_CALL, uri);  
   4. startActivity(it);  
   5. //用這個，要在 AndroidManifest.xml 中，加上  
   6. //<uses-permission id="android.permission.CALL_PHONE" />  

  

传送SMS/MMS

1. //调用短信程序 
   2. Intent it = new Intent(Intent.ACTION_VIEW, uri);  
   3. it.putExtra("sms_body", "The SMS text");   
   4. it.setType("vnd.android-dir/mms-sms");  
   5. startActivity(it); 
   1. //传送消息 
   2. Uri uri = Uri.parse("smsto://0800000123");  
   3. Intent it = new Intent(Intent.ACTION_SENDTO, uri);  
   4. it.putExtra("sms_body", "The SMS text");  
   5. startActivity(it); 
   1. //传送 MMS  
   2. Uri uri = Uri.parse("content://media/external/images/media/23");  
   3. Intent it = new Intent(Intent.ACTION_SEND);   
   4. it.putExtra("sms_body", "some text");   
   5. it.putExtra(Intent.EXTRA_STREAM, uri);  
   6. it.setType("image/png");   
   7. startActivity(it);  

  

传送 Email

 1. Uri uri = Uri.parse("mailto:[email protected]");  
   2. Intent it = new Intent(Intent.ACTION_SENDTO, uri);  
   3. startActivity(it);  


   1. Intent it = new Intent(Intent.ACTION_SEND);  
   2. it.putExtra(Intent.EXTRA_EMAIL, "[email protected]");  
   3. it.putExtra(Intent.EXTRA_TEXT, "The email body text");  
   4. it.setType("text/plain");  
   5. startActivity(Intent.createChooser(it, "Choose Email Client"));  


   1. Intent it=new Intent(Intent.ACTION_SEND);    
   2. String[] tos={"[email protected]"};    
   3. String[] ccs={"[email protected]"};    
   4. it.putExtra(Intent.EXTRA_EMAIL, tos);    
   5. it.putExtra(Intent.EXTRA_CC, ccs);    
   6. it.putExtra(Intent.EXTRA_TEXT, "The email body text");    
   7. it.putExtra(Intent.EXTRA_SUBJECT, "The email subject text");    
   8. it.setType("message/rfc822");    
   9. startActivity(Intent.createChooser(it, "Choose Email Client"));

  


   传送附件
  

Intent it = new Intent(Intent.ACTION_SEND);  
   it.putExtra(Intent.EXTRA_SUBJECT, "The email subject text");  
   it.putExtra(Intent.EXTRA_STREAM, "file:///sdcard/mysong.mp3");  
   sendIntent.setType("audio/mp3");  
   startActivity(Intent.createChooser(it, "Choose Email Client")); 

  

播放多媒体

 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
        //寻找某个应用

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

 显示某个应用的相关信息 
        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 

      
发起一个应用程序
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);  

       

返回桌面

Intent unMyIntent = new Intent(Intent.ACTION_MAIN);
    		unMyIntent.addCategory(Intent.CATEGORY_HOME);
    		startActivity(unMyIntent);

发邮件

Uri uri = Uri.parse("mailto:[email protected]");  		
Intent it = new Intent(Intent.ACTION_SENDTO, uri);

发送文件

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.

发起市场程序

Intent intent = new Intent(Intent.ACTION_VIEW, 
            Uri.parse("market://details?id=pname:org.rabold.android.puzzleblox"));
            //Uri.parse("market://search?q=pname:org.rabold.android.puzzleblox"));
            startActivity(intent);

调用系统裁剪图片

Uri photoUri = Uri.fromFile(new File("/mnt/sdcard/ruhua.jpg"));
				Log.i("path", photoUri.toString());
			    Intent intent = new Intent("com.android.camera.action.CROP");
			    intent.setDataAndType(photoUri, "image/*");
			    intent.putExtra("crop", "true");
			    intent.putExtra("aspectX", 1);
			    intent.putExtra("aspectY", 1);
			    intent.putExtra("outputX", 80);
			    intent.putExtra("outputY", 80);
			    intent.putExtra("output", photoUri);
				intent.putExtra("outputFormat", "JPEG");

实现分享功能

Intent mIntent = new Intent(Intent.ACTION_SEND);
//根据分享的内容设置不同的mimeType			mIntent.setType("text/plain");
mIntent.putExtra(Intent.EXTRA_TEXT, "下载地址?");
mIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(Intent.createChooser(mIntent, "分享"));

获取图片

Intent intent = new Intent();
        /* 设置为image */
        intent.setType("image/*");
        /* 使用Intent.ACTION_GET_CONTENT这个Action */
        intent.setAction(Intent.ACTION_GET_CONTENT);
        /* 取得图片后返回本画面 */
        startActivityForResult(intent, 1);