Intent GridLayout to 4 Activities - 腾讯云开发者社区

文章/答案/技术大牛

发布

【安卓安全】Intent 攻击面（上）

", "io.hextree.attacksurface.activities.Flag3Activity"); startActivity(intent); Flag4Activity 离谱！...action 去启动 Flag4Activity，每次点击按钮都会切换一个状态，最终获得 flag private int actionIndex = ; private final String[...onClick(View v) { String currentAction = actions[actionIndex]; // 每次点击索引 +1 并取模 4，...://app.hextree.io/map/android")); intent.setClassName("io.hextree.attacksurface", "io.hextree.attacksurface.activities.Flag4Activity...("io.hextree.attacksurface", "io.hextree.attacksurface.activities.Flag5Activity"); Intent.putExtra(Intent.EXTRA_INTENT

1.6K1 0

一键退出程序

新建一个ActivityCollecter类做为活动管理器 public class ActivityCollector { public static List activities...); } public static void removeActivity(Activity activity){ activities.remove(activity...intent = new Intent(FirstActivity.this,SecondActivity.class); startActivityForResult...intent = new Intent();//只用来携带被传递的值，不跳转活动 String data = "Hello FirstActivity"; intent.putExtra...onClick(View v) { ActivityCollector.finishAll();//销毁所有活动 } }); } } 4.

1.2K2 0

您找到你想要的搜索结果了吗？

是的

没有找到

Android PackageManager

卸载应用 2、查询permission相关信息 3、查询Application相关信息(application，activity，receiver，service，provider及相应属性等） 4、...); //activity信息 ActivityInfo[] activities = packageInfo.activities; //flag值必须包含PackageManager.GET_RECEIVERS...launcherIntent = new Intent("android.intent.action.MAIN", null); launcherIntent.addCategory("android.intent.category.LAUNCHER...Intent(Intent.ACTION_MAIN); targetIntent.addCategory(Intent.CATEGORY_LAUNCHER); targetIntent.addFlags...)); context.startActivity(localIntent2); } 4、获取所有已安装应用信息 PackageManager packageManager = mContext.getPackageManager

7933 0

Python——使用ElementTre

:name="android.intent.category.LAUNCHER"/> intent-filter> activities = [] # XML analyze def __xml_analyze__(): tree = ET.parse(r"....__(application, packagename) for activity in exported_activities: print activity....def __get_exported_activities__(application, packagename): for activity in application: ... = activity.find("intent-filter") if intent_filter is not None: action = intent_filter.find

5723 0

Set the Preferred Application in Android

It determines what we should do next. 1 2 3 4 5 6 7 public void testGetDefaultActivity() { PackageManager...What you could do is lead the user to the clear default page(installedAppDetails) 1 2 3 4 5 public void...5 6 7 8 9 10 11 12 activities> activities> Special What will system do if I install...After some tests I guess the system will make a list of interested activities instantly.

7672 0

从0系统学Android--2.6 Activity 的最佳实践

public class ActivityCollector{ public static List activities = new ArrayList(); public...static void addActivity(Activity activity){ activities.add(activity); } public static void...(){ for(Activity activity:activities){ if(!...intent = new Intent(context,ActivityA.class); intent.putExtra("param1",data1); intent.putExtra("...param2",data2); context.startActivity(intent); } 下一节开始学习 UI 布局内容！

6621 0

036android初级篇之Activity的启动模式

Task是一个Activities的收集器，专门收集用户操作交互所打开的Activity。这些Activities都被安排在一个回收栈back stack中，安排的顺序和它们打开的顺序一致。...运行模式介绍你可以通过定义运行模式来定义Activities如何与Task进行交互。...如果B在manifest中定义了运行模式，并且A在启动B时，也在Intent中指定了B的运行模式，那么A在Intent的定义将覆盖B在manifest中的定义。...注：有些运行模式在manifest中定义有效未必在Intent中也有效，同样，在Intent定义有效的运行模式在manifest中未必生效。...Activity的launchMode属性来指定4中不同的运行模式 Standard：标准默认模式在这种默认模式下，Activity可以被多次实例化，也可以运行在多个Task中，一个Task可以拥有多个

5193 0

暗码机制

/com/android/dialer/app/SpecialCharSequenceMgr.java /** * Handles secret codes to launch arbitrary activities...input.endsWith("#*#*")) { return false; } String secretCode = input.substring(4, len - 4);.../contacts/common/compat/TelephonyManagerCompat.java /** * Handles secret codes to launch arbitrary activities...Intent intent = new Intent(SECRET_CODE_ACTION, Uri.parse("android_secret_code://" + secretCode...Intent i = new Intent(Intent.ACTION_MAIN); i.setClass(context, MainActivity.class); i.setFlags

2.1K1 0

Android Support Library

v4 Support Library v4库被设计用来兼容Android 1.6（API 4）及以上的版本。...在开发文档API Reference中包android.support.v4下可以看到v4库完整的类、接口等。...v4库文件位于sdk目录/extras/android/support/v4/中，不包含UI资源（添加带资源的安卓库）。...ActionBarActivity - Adds an application activity class that must be used as a base class for activities...GridLayout 的继承层级较浅，性能比GridView好。

1.5K8 0

『APP稳定性测试干货』| 基于Monkey的移动端APP稳定性测试过程和方法

4 Monkey的使用方法4.1 测试指定app4.1.1 参数说明使用-p参数即可；该参数主要是让monkey允许系统启动指定的app；比如指定一个包，我们下载了一个支持安卓6.0的qq，安卓6.0QQ...: 2.0%// 3: 15.0%// 4: -0.0%// 5: -0.0%// 6: 25.0%// 7: 15.0%// 8: 2.0%// 9: 2.0%// 10...:IncludeCategory: android.intent.category.MONKEY// Selecting main activities from category android.intent.category.LAUNCHER...:IncludeCategory: android.intent.category.MONKEY// Selecting main activities from category android.intent.category.LAUNCHER...:IncludeCategory: android.intent.category.MONKEY// Selecting main activities from category android.intent.category.LAUNCHER

1.8K4 1

探究Android活动的小技巧

= new ArrayList(); public static void addActivity(Activity activity){ activities.add...(activity); } public static void removeActivity(Activity activity){ activities.remove...(activity); } public static void finishAll(){ for (Activity activity : activities)...intent = getIntent(); final String extra_data = intent.getStringExtra("extra_data");...intent = new Intent(context,SecondActivity.class); intent.putExtra("param1",data1);

8932 0

【Android 返回堆栈管理】打印 Android 中当前运行的 Activity 任务栈信息 | Activity 任务栈信息分析 | Activity 在相同 Stack 中的不同 Task

ACTIVITY MANAGER ACTIVITIES (dumpsys activity activities) Display #0 (activities from top to bottom)...={act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=net.csdn.csdnplus...=net.csdn.csdnplus/.activity.BlogDetailActivity baseDir=/data/app/net.csdn.csdnplus-AKxdXv4cmCAwI4i4p3DLtA...realActivity=net.csdn.csdnplus/.activity.MainActivity baseDir=/data/app/net.csdn.csdnplus-AKxdXv4cmCAwI4i4p3DLtA...={act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.bgq.novelread

7.5K1 0

Activity启动过程分析

adb shell dumpsys activity 查看activity栈的请款 ACTIVITY MANAGER ACTIVITIES (dumpsys activity activities) Display...U=0 StackId=1 sz=2} Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER...] flg=0x10200000 cmp=com.sogou.iot.testtouch1/.MainActivity } Hist #1: ActivityRecord{4c91dda...t1} Intent { act=android.intent.action.MAIN cat=[android.intent.category.HOME] flg=0x10000300...int ON_START = 2; public static final int ON_RESUME = 3; public static final int ON_PAUSE = 4;

1.3K7 4

Android-活动的最佳实践

可以新建一个ActivityCollector类作为活动管理器： public class ActivityCollector { public static List activities...= new ArrayList(); public static void addActivity(Activity activity){ activities.add(activity...); } public static void removeActivity(Activity activity){ activities.remove(activity...); } public static void finishAll(){ for (Activity activity : activities){...intent = new Intent(context,SecondActivity.class); intent.putExtra("param1",data1); intent.putExtra

1K1 0

深入理解Activity启动模式之launchMode

3459-3459 D/$$$BActivity: onCreate: currentActivityName:BActivity currentTaskID:6384 当前任务栈 Running activities...(most recent first): TaskRecord{3efeab #6384 A=com.tzx.launchmodel U=0 StackId=1 sz=4}...Run #4: ActivityRecord{18878b0 u0 com.tzx.launchmodel/.BActivity t6384} Run #3: ActivityRecord...BActivity: onClickBtn: BActivity start BActivity 14450-14450 D/$$$BActivity: onNewIntent() 当前任务栈 Running activities...BActivity: onClickBtn: BActivity start BActivity 19684-19684 D/$$$BActivity: onNewIntent() 当前任务栈 Running activities

1.4K6 0

ActivityNotFoundException: No Activity found to handle Intent ...

所以，如果你没有安装 Microsoft Excel、WPS Office、Google Sheets 等第三方 App，那么系统就无法响应这个打开请求（Intent），于是就抛出 ActivityNotFoundException...如果没有，打开文件的 Intent 就无法匹配到合适的目标，Android 系统就会报错：ActivityNotFoundException: No Activity found to handle Intent...方法一：判断是否有 App 可处理该文件类型你可以在打开前用 PackageManager 检查一下系统是否能处理这个 Intent：Intent intent = new Intent(Intent.ACTION_VIEW...);intent.setType("application/vnd.ms-excel");PackageManager pm = context.getPackageManager();List activities = pm.queryIntentActivities(intent, 0);if (activities == null || activities.size() == 0)

2611 0

安卓Task和Back Stack

A task is a collection of activities that users interact with when performing a certain job....假设把所有Activities指定编号：a0,a1,a2...an，表示mHistory中第0,1,2...n个Activity，那么，Task就是从a0到an中连续的一个个“子序列”，一个Task包括...在启动一个Activity时，可以在Intent中添加标记，指示其运行在新的Task中，还是已经存在的Task中。...Activities can be instantiated multiple times, even from other tasks....singleTask 若当前Task或其它Task中存在要启动的Activity的实例，就发送intent给它，并且设置了flag:Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT

1.4K9 0

Android 中Scheme协议的使用详解

macthId=222&time=10001 4.在app中如何使用在AndroidManifest.xml中对activity标签增加intent-filter设置Schema 打开源生应用指定的页面复制代码 2.在源生应用中调用也很简单 Intent intent = new Intent(Intent.ACTION_VIEW...path==========="+data.getPath()); Log.e("TAG", "port==========="+data.getPort()); 复制代码输出结果 4-...macthId=222&time=10001")); List activities =packageManager.queryIntentActivities(intent...activities.isEmpty(); Toast.makeText(this,isValid+"",Toast.LENGTH_LONG).show(); 最后完整源码下载地址：https://market.cloud.tencent.com

4K2 0

【Android基础】Android利用Intent与其他应用交互

下面是附带数据的Intent例子：发送带有附件的Email： Intent emailIntent = new Intent(Intent.ACTION_SEND); // The intent does...验证Intent的代码如下： PackageManager packageManager = getPackageManager(); List activities = packageManager.queryIntentActivities...(intent, PackageManager.MATCH_DEFAULT_ONLY); boolean isIntentSafe = activities.size() > 0; 下面的例子是完整的启动地图应用的例子...location); // Verify it resolves PackageManager packageManager = getPackageManager(); List activities...= packageManager.queryIntentActivities(mapIntent, 0); boolean isIntentSafe = activities.size() > 0;

1.3K10 0

笔记：Activity的启动过程

在启动MainActivity的前后，可以运行命令来查看有关的Activities的信息。...启动MainActivity前，显示Launcher时： ACTIVITY MANAGER ACTIVITIES (dumpsys activity activities) Stack #0:...点击App图标，打开MainActivity之后： ACTIVITY MANAGER ACTIVITIES (dumpsys activity activities) Stack #0: Task..., requestCode, options); ... } step 4：Instrumentation.execStartActivity() public ActivityResult...阶段4 AMS处理ACTIVITY_PAUSED_TRANSACTION 接下来的操作又转到AMS中进行，从响应ACTIVITY_PAUSED_TRANSACTION事件开始。

1.6K8 0

点击加载更多

【安卓安全】Intent 攻击面（上）

一键退出程序

Android PackageManager

Python——使用ElementTre

Set the Preferred Application in Android

从0系统学Android--2.6 Activity 的最佳实践

036android初级篇之Activity的启动模式

暗码机制

Android Support Library

『APP稳定性测试干货』| 基于Monkey的移动端APP稳定性测试过程和方法

探究Android活动的小技巧

【Android 返回堆栈管理】打印 Android 中当前运行的 Activity 任务栈信息 | Activity 任务栈信息分析 | Activity 在相同 Stack 中的不同 Task

Activity启动过程分析

Android-活动的最佳实践

深入理解Activity启动模式之launchMode

ActivityNotFoundException: No Activity found to handle Intent ...

安卓Task和Back Stack

Android 中Scheme协议的使用详解

【Android基础】Android利用Intent与其他应用交互

笔记：Activity的启动过程

相关资讯

热门标签

活动推荐

运营活动

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐