android - 如何为应用程序上下文启动 Intent

Question

我发现了几乎相同的问题:How to start an Intent if context is not Activity Context but Application Context

但我在使用 https://stackoverflow.com/a/9238105/6593395 时失败了

public void onReceive(Context context, Intent intent) {
    String action = intent.getAction();
    if ("android.intent.action.BOOT_COMPLETED".equals(action)) {
        Intent applicationIntent = new Intent(context, myCamApplication.class);
        applicationIntent.setAction(myCamApplication.class.getName());
        applicationIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(applicationIntent);

错误日志:

Caused by: android.content.ActivityNotFoundException: Unable to find explicit activity class {com.fenchtose.asyncamera/com.eason.mycamera.myCamApplication}; have you declared this activity in your AndroidManifest.xml?

我已经在 AndroidManifest.xml 中将这个 myCamApplication 类注册为我的应用程序类

    <application
    android:name=".myCamApplication"
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme"
    >
    <receiver
        android:name=".BootComplete"
        android:enabled="true"
        android:exported="true">
        <intent-filter>
            <action android:name="android.intent.action.BOOT_COMPLETED" />
        </intent-filter>
    </receiver>
    <activity
        android:name=".myCam"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
</application>

那么，有人可以帮忙吗？

Answer 1

您不能启动应用程序类。您只能启动一个 Activity 。

更改您的代码，例如:

Intent applicationIntent = new Intent(context, myCamApplication.class);

到

Intent applicationIntent = new Intent(context, myCam.class);