android Intent的一些用法

于 2011-09-01 15:37:00 发布 · 54 阅读 · 0
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#移动开发 #java #数据库

本文详细介绍了Android中Intent的多种使用场景，包括Activity间的数据传递、返回结果、启动外部应用和服务等，并提供了丰富的代码示例。

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1.无参数Activity跳转

Java代码
  1. Intentit=newIntent(Activity.Main.this,Activity2.class);
  2. startActivity(it);
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）

Java代码
  1. Intentit=newIntent(Activity.Main.this,Activity2.class);
  2. Bundlebundle=newBundle();
  3. bundle.putString("name","ThisisfromMainActivity!");
  4. it.putExtras(bundle);//it.putExtra(“test”,"shuju”);
  5. startActivity(it);//startActivityForResult(it,REQUEST_CODE); 
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：

Java代码
  1. Bundlebundle=getIntent().getExtras();
  2. Stringname=bundle.getString("name"); 
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）
Java代码
  1. Intentintent=getIntent();
  2. Bundlebundle2=newBundle();
  3. bundle2.putString("name","ThisisfromShowMsg!");
  4. intent.putExtras(bundle2);
  5. setResult(RESULT_OK,intent);
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）
Java代码
  1. @Override
  2. protectedvoidonActivityResult(intrequestCode,intresultCode,Intentdata){
  3. //TODOAuto-generatedmethodstub
  4. super.onActivityResult(requestCode,resultCode,data);
  5. if(requestCode==REQUEST_CODE){
  6. if(resultCode==RESULT_CANCELED)
  7. setTitle("cancle");
  8. elseif(resultCode==RESULT_OK){
  9. Stringtemp=null;
  10. Bundlebundle=data.getExtras();
  11. if(bundle!=null)temp=bundle.getString("name");
  12. setTitle(temp);
  13. }
  14. }
  15. }
@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
Java代码
  1. 1.Uriuri=Uri.parse("http://google.com");
  2. 2.Intentit=newIntent(Intent.ACTION_VIEW,uri);
  3. 3.startActivity(it); 
1. Uri uri = Uri.parse("http://google.com");  
   2. Intent it = new Intent(Intent.ACTION_VIEW, uri);  
   3. startActivity(it);


显示地图
Java代码
  1. 1.Uriuri=Uri.parse("geo:38.899533,-77.036476");
  2. 2.Intentit=newIntent(Intent.ACTION_VIEW,uri);
  3. 3.startActivity(it);
  4. 4.//其他geoURI範例
  5. 5.//geo:latitude,longitude
  6. 6.//geo:latitude,longitude?z=zoom
  7. 7.//geo:0,0?q=my+street+address
  8. 8.//geo:0,0?q=business+near+city
  9. 9.//google.streetview:cbll=lat,lng&cbp=1,yaw,,pitch,zoom&mz=mapZoom 
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
Java代码
  1. 1.Uriuri=Uri.parse("http://maps.google.com/maps?f=d&saddr=startLat%20startLng&daddr=endLat%20endLng&hl=en");
  2. 2.Intentit=newIntent(Intent.ACTION_VIEW,uri);
  3. 3.startActivity(it);
  4. 4.//wherestartLat,startLng,endLat,endLngarealongwith6decimalslike:50.123456 
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
Java代码
  1. 1.//叫出拨号程序
  2. 2.Uriuri=Uri.parse("tel:0800000123");
  3. 3.Intentit=newIntent(Intent.ACTION_DIAL,uri);
  4. 4.startActivity(it);
  5. 1.//直接打电话出去
  6. 2.Uriuri=Uri.parse("tel:0800000123");
  7. 3.Intentit=newIntent(Intent.ACTION_CALL,uri);
  8. 4.startActivity(it);
  9. 5.//用這個，要在AndroidManifest.xml中，加上
  10. 6.//<uses-permissionid="android.permission.CALL_PHONE"/> 
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
Java代码
  1. 1.//调用短信程序
  2. 2.Intentit=newIntent(Intent.ACTION_VIEW,uri);
  3. 3.it.putExtra("sms_body","TheSMStext");
  4. 4.it.setType("vnd.android-dir/mms-sms");
  5. 5.startActivity(it);
  6. 1.//传送消息
  7. 2.Uriuri=Uri.parse("smsto://0800000123");
  8. 3.Intentit=newIntent(Intent.ACTION_SENDTO,uri);
  9. 4.it.putExtra("sms_body","TheSMStext");
  10. 5.startActivity(it);
  11. 1.//传送MMS
  12. 2.Uriuri=Uri.parse("content://media/external/images/media/23");
  13. 3.Intentit=newIntent(Intent.ACTION_SEND);
  14. 4.it.putExtra("sms_body","sometext");
  15. 5.it.putExtra(Intent.EXTRA_STREAM,uri);
  16. 6.it.setType("image/png");
  17. 7.startActivity(it); 
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
Java代码
  1. 1.Uriuri=Uri.parse("mailto:xxx@abc.com");
  2. 2.Intentit=newIntent(Intent.ACTION_SENDTO,uri);
  3. 3.startActivity(it);
  6. 1.Intentit=newIntent(Intent.ACTION_SEND);
  7. 2.it.putExtra(Intent.EXTRA_EMAIL,"me@abc.com");
  8. 3.it.putExtra(Intent.EXTRA_TEXT,"Theemailbodytext");
  9. 4.it.setType("text/plain");
  10. 5.startActivity(Intent.createChooser(it,"ChooseEmailClient"));
  13. 1.Intentit=newIntent(Intent.ACTION_SEND);
  14. 2.String[]tos={"me@abc.com"};
  15. 3.String[]ccs={"you@abc.com"};
  16. 4.it.putExtra(Intent.EXTRA_EMAIL,tos);
  17. 5.it.putExtra(Intent.EXTRA_CC,ccs);
  18. 6.it.putExtra(Intent.EXTRA_TEXT,"Theemailbodytext");
  19. 7.it.putExtra(Intent.EXTRA_SUBJECT,"Theemailsubjecttext");
  20. 8.it.setType("message/rfc822");
  21. 9.startActivity(Intent.createChooser(it,"ChooseEmailClient")); 
 1. Uri uri = Uri.parse("mailto:xxx@abc.com");  
   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, "me@abc.com");  
   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={"me@abc.com"};    
   3. String[] ccs={"you@abc.com"};    
   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
Java代码
  1. Intentit=newIntent(Intent.ACTION_SEND);
  2. it.putExtra(Intent.EXTRA_SUBJECT,"Theemailsubjecttext");
  3. it.putExtra(Intent.EXTRA_STREAM,"file:///sdcard/mysong.mp3");
  4. sendIntent.setType("audio/mp3");
  5. startActivity(Intent.createChooser(it,"ChooseEmailClient")); 
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
Java代码
  1. Uriuri=Uri.parse("file:///sdcard/song.mp3");
  2. Intentit=newIntent(Intent.ACTION_VIEW,uri);
  3. it.setType("audio/mp3");
  4. startActivity(it);
  5. Uriuri=Uri.withAppendedPath(MediaStore.Audio.Media.INTERNAL_CONTENT_URI,"1");
  6. Intentit=newIntent(Intent.ACTION_VIEW,uri);
  7. startActivity(it);
 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
Java代码
  1. Uriuri=Uri.parse("market://search?q=pname:pkg_name");
  2. Intentit=newIntent(Intent.ACTION_VIEW,uri);
  3. startActivity(it);
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
Java代码
  1. 显示某个应用的相关信息
  2. Uriuri=Uri.parse("market://details?id=app_id");
  3. Intentit=newIntent(Intent.ACTION_VIEW,uri);
  4. startActivity(it);
  5. //whereapp_idistheapplicationID,findtheID
  6. //byclickingonyourapplicationonMarkethome
  7. //page,andnoticetheIDfromtheaddressbar 
 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
Java代码
  1. finalIntentintent=newIntent(Intent.ACTION_MAIN,null);
  2. intent.addCategory(Intent.CATEGORY_LAUNCHER);
  3. finalComponentNamecn=newComponentName("com.android.settings","com.android.settings.fuelgauge.PowerUsageSummary");
  4. intent.setComponent(cn);
  5. intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
  6. startActivity(intent);
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
Java代码
  1. Uriuri=Uri.fromParts("package",strPackageName,null);
  2. Intentit=newIntent(Intent.ACTION_DELETE,uri);
  3. startActivity(it);
Uri uri = Uri.fromParts("package", strPackageName, null); 
       Intent it = new Intent(Intent.ACTION_DELETE, uri);   
        startActivity(it);


返回桌面
Java代码
  1. IntentunMyIntent=newIntent(Intent.ACTION_MAIN);
  2. unMyIntent.addCategory(Intent.CATEGORY_HOME);
  3. startActivity(unMyIntent);
Intent unMyIntent = new Intent(Intent.ACTION_MAIN);
    		unMyIntent.addCategory(Intent.CATEGORY_HOME);
    		startActivity(unMyIntent);


发邮件
Java代码
  1. Uriuri=Uri.parse("mailto:fengsheng.studio@hotmail.com");
  2. Intentit=newIntent(Intent.ACTION_SENDTO,uri); 
Uri uri = Uri.parse("mailto:fengsheng.studio@hotmail.com");  		
Intent it = new Intent(Intent.ACTION_SENDTO, uri);


发送文件
Java代码
  1. Intentintent=newIntent();
  2. intent.setAction(Intent.ACTION_SEND);
  3. intent.setType(mimeType);
  4. intent.putExtra(Intent.EXTRA_STREAM,uri);
  5. startActivity(intent);
  7. 以上有两个变量需要说明:
  8. 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/*"
  9. 2.uri:如果是直接读取到文件路径并发送,则为Uri.fromFile(newFile(filePath));
  10. 如果是从数据库中查循出来的uri,则直接传入即可.
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