Question

我想用权限做一个简单的练习。我需要为我的应用程序定义并强制执行名为“DangerousApp”的自定义权限，之后我需要设置另一个应用程序“PermissionsLab”，以便它可以使用“DangerousApp”，但是当我尝试启动“ DangerousApp“使用”PermissionLab“我收到错误：”不幸的是，PermissionsLab已停止“

PermissionsLab的AndroidManifest.xml：

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

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="18" />

    <!--  TODO - add uses-permission elements -->
    <uses-permission android:name="com.android.browser.permission.READ_HISTORY_BOOKMARKS"/>
    <uses-permission android:name="course.labs.permissions.DANGEROUS_ACTIVITY_PERM"/>

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".ActivityLoaderActivity"
            android:label="@string/title_main" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name=".BookmarksActivity"
            android:label="@string/title_permissions" >
        </activity>
        <activity
            android:name=".GoToDangerousActivity"
            android:label="@string/title_activity_customization" >
        </activity>
    </application>

</manifest>

DangerousApp的AndroidManifest.xml：

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

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="18" />

    <!--  TODO - add uses-permission elements -->
    <uses-permission android:name="com.android.browser.permission.READ_HISTORY_BOOKMARKS"/>
    <uses-permission android:name="course.labs.permissions.DANGEROUS_ACTIVITY_PERM"/>

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".ActivityLoaderActivity"
            android:label="@string/title_main" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name=".BookmarksActivity"
            android:label="@string/title_permissions" >
        </activity>
        <activity
            android:name=".GoToDangerousActivity"
            android:label="@string/title_activity_customization" >
        </activity>
    </application>

</manifest>

用于启动DangerousApp的活动：

package course.labs.permissionslab;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class GoToDangerousActivity extends Activity {

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

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

    @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()");

        startActivity(new Intent(DANGEROUS_ACTIVITY_ACTION));


    }

}

感谢您的澄清。

Answer 1

权限可以帮助您保护服务，应用程序，活动...... 这里的文件： http://developer.android.com/guide/topics/security/permissions.html#declaring http://developer.android.com/guide/topics/security/permissions.html#manifest

例如，如果您想要使用权限保护活动，请在AndroidManifest中声明权限并将其置于活动中：

<manifest [...] >
    <permission android:name="com.mycompany.MY_PERMISSION"  android:protectionLevel="normal"
        android:description="@string/permission_desc"
        android:label="@string/permission_label" />
    <application [...] >
        <activity [...] android:permission="com.mycompany.MY_PERMISSION">
        </activity>
    </application>
</manifest>

在另一个应用程序中，如果要调用受权限保护的活动，则必须在AndroidManifest中添加：

<uses-permission android:name="com.mycompany.MY_PERMISSION" />

以权限启动活动

1 个答案: