一键启用或禁用启动意图过滤器活动 [英] Enable or disable launch intent-filter activities with one button
问题描述
我有一个包含多个活动的应用程序,它们在清单中都有一个启动意图过滤器,因此它们可以在启动器上显示几个图标,有一个主要活动,其余的默认情况下已被android:enabled="false"
禁用这是我的清单的一部分:
I have an app with several activities, they all have a launch intent-filter in the manifest so they can show several icons on the launcher, there is a main activity and the rest of them are disabled by default with android:enabled="false"
here is a part of my manifest:
<activity
android:name="com.myapp.MainActivity"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name="com.myapp.Activity_1"
android:icon="@mipmap/ic_launcher"
android:label="@string/secondary_activity"
android:enabled="false">// HERE I DISABLE THE ACTIVITY
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
我找到了一种使用以下代码启用或禁用其他活动的方法:
I found a way to enable or disable the other activities using the following code:
public static void enableComponent(Context context, Class<?> componentClass, boolean isEnable) {
int enableFlag = isEnable ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED : PackageManager.COMPONENT_ENABLED_STATE_DISABLED;
context.getPackageManager().setComponentEnabledSetting(new ComponentName(context, componentClass), enableFlag, PackageManager.DONT_KILL_APP);
}
private void setupDetailsOverviewRowPresenter() {
detailsPresenter.setOnActionClickedListener(new OnActionClickedListener() {
@Override
public void onActionClicked(Action action) {
if (action.getId() == ACTION_ENABLE){
mSelectedApp = (App) getActivity().getIntent().getSerializableExtra(DetailsActivity.APP);
enableComponent(mContext, com.myapp.Activity_1.class, true);
}
}else if (action.getId() == ACTION_DISABLED){
mSelectedApp = (App) getActivity().getIntent().getSerializableExtra(DetailsActivity.APP);
enableComponent(mContext, com.myapp.Activity_1.class, false);
}
}
});
}
这可以通过使用ACTION_ENABLE
或ACTION_DISABLE
按钮启用或禁用活动来完美地实现,但这对可用性不利,相反,我只想使用一个按钮来启用或禁用活动.
This works perfectly by enabling or disabling the activity with the ACTION_ENABLE
or ACTION_DISABLE
buttons, but that's not good for usability, instead I would like to use just one button to enable or disable the activity.
我需要知道的是如何获取活动的状态,因此,如果活动是android:enabled="false"
,则显示带有ACTION_EANBLE
的按钮,如果活动是android:enabled="true"
,则显示带有ACTION_DISABLE
的按钮./p>
What I need to know is how to get the status of the activity, so if the activity is android:enabled="false"
display the button with ACTION_EANBLE
and if the activity is android:enabled="true"
display the button with ACTION_DISABLE
.
推荐答案
您可以查询PackageManager
以确定是否启用了组件:
You can query the PackageManager
to determine if a component is enabled or not:
PackageManager pm = getPackageManager();
ComponentName cn = new ComponentName(...);
ActivityInfo info = pm.getActivityInfo(cn, 0);
if (info != null && info.enabled) {
// Component is enabled
...
} else {
// Component is disabled
...
}
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