Question

所以我的主要问题是启动一个隐含意图的新应用。所以这是应该启动nem应用程序的活动：

package course.labs.permissionslab;
public class GoToDangerousActivity extends Activity {

private static final String TAG = "Lab-Permissions";

private static final String DANGEROUS_ACTIVITY_ACTION = "course.labs.permissions.DANGEROUS_ACTIVITY_PERM";

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.go_to_dangerous_activity);

    Button startDangerousActivityButton = (Button) findViewById(R.id.start_dangerous_activity_button);
    startDangerousActivityButton.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {

            startDangerousActivity();

        }
    });

}

private void startDangerousActivity() {

    Log.i(TAG, "Entered startDangerousActivity()");
    Intent dangerActivation = Intent.createChooser(new Intent(DANGEROUS_ACTIVITY_ACTION), "Choose yo..");
    startActivity(dangerActivation);

}

}

我刚刚添加了appChoser，所以我的应用程序不会立即中断。现在通过strting隐含的意图“course.labs.permissions.DANGEROUS_ACTIVITY_PERM”，我需要添加到其他应用程序意图过滤器？我将留下其他应用程序Manifest.XML的副本来帮助发现问题：

    <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="course.labs.dangerousapp"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="13"
        android:targetSdkVersion="18" />

    <!--
          TODO - Using a permission element,
          define a custom permission with name
              "course.labs.permissions.DANGEROUS_ACTIVITY_PERM" 
          and "dangerous" protection level.
    -->
    <permission 
        android:protectionLevel="dangerous" 
        android:name="course.labs.permissions.DANGEROUS_ACTIVITY_PERM">
    </permission>

    <uses-permission android:name="course.labs.permissions.DANGEROUS_ACTIVITY"/>

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >

        <!-- TODO - enforce the custom permission on this Activity -->

        <activity
            android:name=".DangerousActivity"
            android:label="@string/app_name">

            <!--
                 TODO - add additional intent filter info so that this Activity
                  will respond to an Implicit Intent with the action
                  "course.labs.permissions.DANGEROUS_ACTIVITY"
            -->


            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>

            <intent-filter>
                <action android:name="course.labs.permissions.DANGEROUS_ACTIVITY_PERM" />
                <category android:name="android.intent.category.DEFAULT" /> 
            </intent-filter>

        </activity>
    </application>

</manifest>

Answer 1

首先，

<uses-permission android:name="course.labs.permissions.DANGEROUS_ACTIVITY_PERM"/>

这应该在您要访问此应用的应用中。

假设你有应用A并想要打开Dangerous App，你可以将此权限用于A的清单文件中。

第二名：

您还需要告知应用程序有关权限。将此权限添加到应用程序。

<application
    android:permission="course.labs.permissions.DANGEROUS_ACTIVITY_PERM"
    <!-- your other attributes --> 
>

第三：

Intent过滤器应该链接到Activity而不是权限字符串。

      <intent-filter>
            <action android:name="course.labs.permissions.DANGEROUS_ACTIVITY" />
            <category android:name="android.intent.category.DEFAULT" />
      </intent-filter>

Android，无法隐式启动活动

1 个答案: