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先看下 Context.java 中的函数定义:
public abstract void startActivity(@RequiresPermission Intent intent);
/**
* Launch a new activity. You will not receive any information about when
* the activity exits.
*
* <p>Note that if this method is being called from outside of an
* {@link android.app.Activity} Context, then the Intent must include
* the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag. This is because,
* without being started from an existing Activity, there is no existing
* task in which to place the new activity and thus it needs to be placed
* in its own separate task.
*
* <p>This method throws {@link ActivityNotFoundException}
* if there was no Activity found to run the given Intent.
*
* @param intent The description of the activity to start.
* @param options Additional options for how the Activity should be started.
* May be null if there are no options. See {@link android.app.ActivityOptions}
* for how to build the Bundle supplied here; there are no supported definitions
* for building it manually.
*
* @throws ActivityNotFoundException
*
* @see #startActivity(Intent)
* @see PackageManager#resolveActivity
*/
public abstract void startActivity(@RequiresPermission Intent intent,
@Nullable Bun
本文标签: 有什么不同ContextstartActivityActivity
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