android_content_ActivityNotFoundException怎么使用

问题分析：
无法找到对应的Activity时抛出此类异常。
解决方案：
无法找到对应的Activity时抛出此类异常，一般发生在AndroidManifest.xml文件没有配置需要的Activity路径所导致的或手机中确实无此应用，建议检查AndroidManifest文件Activity路径并在启动Activity处捕获异常。
代码示例：
android.content.ActivityNotFoundException: Unable to find explicit activity class {*}; have you declared this activity in your AndroidManifest.xml?
方案1. 确认AndroidManifest.xml中所需Activity路径正确

1. [backcolor=transparent]    [backcolor=transparent]<activity
2. [backcolor=transparent]        [backcolor=transparent]android:name[backcolor=transparent]=[backcolor=transparent]"com.your.package.name.YourActivity"
3. [backcolor=transparent]        [backcolor=transparent]android:label[backcolor=transparent]=[backcolor=transparent]"@string/app_name"[backcolor=transparent]>
4. [backcolor=transparent]        [backcolor=transparent]<intent-filter>
5. [backcolor=transparent]            [backcolor=transparent]<action[backcolor=transparent] [backcolor=transparent]android:name[backcolor=transparent]=[backcolor=transparent]"android.intent.action.MAIN"[backcolor=transparent] [backcolor=transparent]/>
6. [backcolor=transparent]            [backcolor=transparent]<category[backcolor=transparent] [backcolor=transparent]android:name[backcolor=transparent]=[backcolor=transparent]"android.intent.category.LAUNCHER"[backcolor=transparent] [backcolor=transparent]/>
7. [backcolor=transparent]        [backcolor=transparent]</intent-filter>
8. [backcolor=transparent]    [backcolor=transparent]</activity>

方案2. 针对可能不存在的Activity抛出的异常进行捕获

1. [backcolor=transparent]public[backcolor=transparent] [backcolor=transparent]static[backcolor=transparent] [backcolor=transparent]void[backcolor=transparent] startDialer[backcolor=transparent]([backcolor=transparent]Context[backcolor=transparent] context[backcolor=transparent],[backcolor=transparent] [backcolor=transparent]String[backcolor=transparent] phoneNumber[backcolor=transparent])[backcolor=transparent] [backcolor=transparent]{
2. [backcolor=transparent]    [backcolor=transparent]try[backcolor=transparent] [backcolor=transparent]{
3. [backcolor=transparent]        [backcolor=transparent]Intent[backcolor=transparent] dial [backcolor=transparent]=[backcolor=transparent] [backcolor=transparent]new[backcolor=transparent] [backcolor=transparent]Intent[backcolor=transparent]();
4. [backcolor=transparent]        dial[backcolor=transparent].[backcolor=transparent]setAction[backcolor=transparent]([backcolor=transparent]Intent[backcolor=transparent].[backcolor=transparent]ACTION_DIAL[backcolor=transparent]);
5. [backcolor=transparent]        dial[backcolor=transparent].[backcolor=transparent]setData[backcolor=transparent]([backcolor=transparent]Uri[backcolor=transparent].[backcolor=transparent]parse[backcolor=transparent]([backcolor=transparent]"tel:"[backcolor=transparent] [backcolor=transparent]+[backcolor=transparent] phoneNumber[backcolor=transparent]));
6. [backcolor=transparent]        context[backcolor=transparent].[backcolor=transparent]startActivity[backcolor=transparent]([backcolor=transparent]dial[backcolor=transparent]);
7. [backcolor=transparent]    [backcolor=transparent]}[backcolor=transparent] [backcolor=transparent]catch[backcolor=transparent] [backcolor=transparent]([backcolor=transparent]ActivityNotFoundException[backcolor=transparent] ex[backcolor=transparent])[backcolor=transparent] [backcolor=transparent]{
8. [backcolor=transparent]        [backcolor=transparent]Log[backcolor=transparent].[backcolor=transparent]e[backcolor=transparent]([backcolor=transparent]TAG[backcolor=transparent],[backcolor=transparent] [backcolor=transparent]"Error starting phone dialer intent."[backcolor=transparent],[backcolor=transparent] ex[backcolor=transparent]);
9. [backcolor=transparent]        [backcolor=transparent]Toast[backcolor=transparent].[backcolor=transparent]makeText[backcolor=transparent]([backcolor=transparent]context[backcolor=transparent],[backcolor=transparent] [backcolor=transparent]"Sorry, we couldn't find any app to place a phone call!"[backcolor=transparent],
10. [backcolor=transparent]                [backcolor=transparent]Toast[backcolor=transparent].[backcolor=transparent]LENGTH_SHORT[backcolor=transparent]).[backcolor=transparent]show[backcolor=transparent]();
11. [backcolor=transparent]    [backcolor=transparent]}
12. [backcolor=transparent]}

参考文献：
1.https://developer.android.com/reference/android/content/ActivityNotFoundException.html
2.http://stackoverflow.com/questions/15825081/error-default-activity-not-found
3.http://www.cnblogs.com/Cjch/archive/2013/05/28/3104561.html
4.https://developer.android.com/guide/topics/manifest/manifest-intro.html （应用清单文件）
5.https://developer.android.com/guide/topics/manifest/activity-element.html （activity语法）

<activity android:name=".YourActivity">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>

try {
    Intent intent = new Intent(this, YourActivity.class);
    startActivity(intent);
} catch (ActivityNotFoundException e) {
    Log.e(TAG, "Activity not found", e);
    Toast.makeText(this, "无法找到相应的页面，请检查应用设置。", Toast.LENGTH_SHORT).show();
}