上篇博客講了我的背裕活之旅，這篇說一下“1像素頁面迸悴龋活”的具體實現(xiàn)杖们。
第一步，新建一個Activity肩狂，作為1像素頁面的主體摘完，我姑且叫它HooliganActivity:

public class HooliganActivity extends Activity {
    private static HooliganActivity instance;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        instance = this;
        Window window = getWindow();
        window.setGravity(Gravity.LEFT | Gravity.TOP);
        WindowManager.LayoutParams params = window.getAttributes();
        params.x = 0;
        params.y = 0;
        params.height = 1;
        params.width = 1;
        window.setAttributes(params);
    }

    /**
     * 開啟保活頁面
     */
    public static void startHooligan() {
        Intent intent = new Intent(DWApplication.getAppContext(), HooliganActivity.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        DWApplication.getAppContext().startActivity(intent);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        instance = null;
    }

    /**
     * 關(guān)閉鄙邓活頁面
     */
    public static void killHooligan() {
        if(instance != null) {
            instance.finish();
        }
    }
}

第二步孝治，注冊清單文件：

        <activity android:name=".activity.HooliganActivity"
            android:configChanges="keyboardHidden|orientation|screenSize|navigation|keyboard"
            android:excludeFromRecents="true"
            android:exported="false"
            android:finishOnTaskLaunch="false"
            android:launchMode="singleInstance"
            android:theme="@style/HooliganActivityStyle"/>

    <style name="HooliganActivityStyle">
        <item name="android:windowBackground">@color/transparent</item>
        <item name="android:windowContentOverlay">@null</item>
        <item name="android:windowIsTranslucent">true</item>
        <item name="android:windowNoDisplay">false</item>
        <item name="android:windowDisablePreview">true</item>
    </style>

第三步，監(jiān)聽鎖屏和解鎖通知审磁，不能靜態(tài)注冊廣播谈飒，只能動態(tài)注冊：

IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_SCREEN_ON);
filter.addAction(Intent.ACTION_SCREEN_OFF);
registerReceiver(new BootCompleteReceiver(),filter);

第四步，分別在解鎖和鎖屏?xí)r喚醒我的HooliganActivity：

public class BootCompleteReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        if(intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) {
            HooliganActivity. startHooligan();
        } else if(intent.getAction().equals(Intent.ACTION_SCREEN_ON)){
            HooliganActivity. killHooligan();
        }
    }
}

這樣你在后臺每次鎖屏态蒂，實際上都會吊起一個一像素的頁面杭措，假裝app在前臺，擁有最高進(jìn)程優(yōu)先級钾恢。
??不推薦使用手素，太流氓了- -！瘩蚪。

技術(shù)無罪泉懦。
?????????????????????????????? ——王欣

但人有罪。