▲ 前言：

當我們的使用者使用App時不小心拒絕了某項必要許可權，而導致無法正常使用。這時候希望重新去開啟該許可權，那麼問題來了，Android廠家定製的room五花八門，很多時候卻發現找不到許可權管理的入口。為了解決這一問題，如果我們應用中直接提供許可權管理入口給使用者，是不是會很方便的解決使用者這一困擾呢?經過一番研究，整理出了大部分國產手機直接開啟許可權管理介面的方法

▲ 許可權介面的跳轉

一般專案中我們都會通過一個類來管理我們的Permission，即PermissionPageUtils

/**
 * 許可權請求頁適配，不同手機系統跳轉到不同的許可權請求頁
 *
 * @author Donkor
 */

public class PermissionPageUtils {
    private final String TAG = "PermissionPageManager";
    private Context mContext;
    //自己的專案包名
    private String packageName="com.donkor.demo";

    public PermissionPageUtils(Context context) {
        this.mContext = context;
    }

    public void jumpPermissionPage() {
        String name = Build.MANUFACTURER;
        L.e(TAG, "jumpPermissionPage --- name : " + name);
        switch (name) {
            case "HUAWEI":
                goHuaWeiMainager();
                break;
            case "vivo":
                goVivoMainager();
                break;
            case "OPPO":
                goOppoMainager();
                break;
            case "Coolpad":
                goCoolpadMainager();
                break;
            case "Meizu":
                goMeizuMainager();
                break;
            case "Xiaomi":
                goXiaoMiMainager();
                break;
            case "samsung":
                goSangXinMainager();
                break;
            case "Sony":
                goSonyMainager();
                break;
            case "LG":
                goLGMainager();
                break;
            default:
                goIntentSetting();
                break;
        }
    }

    private void goLGMainager(){
        try {
            Intent intent = new Intent(packageName);
            ComponentName comp = new ComponentName("com.android.settings", "com.android.settings.Settings$AccessLockSummaryActivity");
            intent.setComponent(comp);
            mContext.startActivity(intent);
        } catch (Exception e) {
            Toast.makeText(mContext, "跳轉失敗", Toast.LENGTH_LONG).show();
            e.printStackTrace();
            goIntentSetting();
        }
    }
    private void goSonyMainager(){
        try {
            Intent intent = new Intent(packageName);
            ComponentName comp = new ComponentName("com.sonymobile.cta", "com.sonymobile.cta.SomcCTAMainActivity");
            intent.setComponent(comp);
            mContext.startActivity(intent);
        } catch (Exception e) {
            Toast.makeText(mContext, "跳轉失敗", Toast.LENGTH_LONG).show();
            e.printStackTrace();
            goIntentSetting();
        }
    }

    private void goHuaWeiMainager() {
        try {
            Intent intent = new Intent(packageName);
            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            ComponentName comp = new ComponentName("com.huawei.systemmanager", "com.huawei.permissionmanager.ui.MainActivity");
            intent.setComponent(comp);
            mContext.startActivity(intent);
        } catch (Exception e) {
            Toast.makeText(mContext, "跳轉失敗", Toast.LENGTH_LONG).show();
            e.printStackTrace();
            goIntentSetting();
        }
    }

    private static String getMiuiVersion() {
        String propName = "ro.miui.ui.version.name";
        String line;
        BufferedReader input = null;
        try {
            Process p = Runtime.getRuntime().exec("getprop " + propName);
            input = new BufferedReader(
                    new InputStreamReader(p.getInputStream()), 1024);
            line = input.readLine();
            input.close();
        } catch (IOException ex) {
            ex.printStackTrace();
            return null;
        } finally {
            try {
                input.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return line;
    }

    private void goXiaoMiMainager() {
        String rom = getMiuiVersion();
        L.e(TAG,"goMiaoMiMainager --- rom : "+rom);
        Intent intent=new Intent();
        if ("V6".equals(rom) || "V7".equals(rom)) {
            intent.setAction("miui.intent.action.APP_PERM_EDITOR");
            intent.setClassName("com.miui.securitycenter", "com.miui.permcenter.permissions.AppPermissionsEditorActivity");
            intent.putExtra("extra_pkgname", packageName);
        } else if ("V8".equals(rom) || "V9".equals(rom)) {
            intent.setAction("miui.intent.action.APP_PERM_EDITOR");
            intent.setClassName("com.miui.securitycenter", "com.miui.permcenter.permissions.PermissionsEditorActivity");
            intent.putExtra("extra_pkgname", packageName);
        } else {
            goIntentSetting();
        }
        mContext.startActivity(intent);
    }

    private void goMeizuMainager() {
        try {
            Intent intent = new Intent("com.meizu.safe.security.SHOW_APPSEC");
            intent.addCategory(Intent.CATEGORY_DEFAULT);
            intent.putExtra("packageName", packageName);
            mContext.startActivity(intent);
        } catch (ActivityNotFoundException localActivityNotFoundException) {
            localActivityNotFoundException.printStackTrace();
            goIntentSetting();
        }
    }

    private void goSangXinMainager() {
        //三星4.3可以直接跳轉
        goIntentSetting();
    }

    private void goIntentSetting() {
        Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
        Uri uri = Uri.fromParts("package", mContext.getPackageName(), null);
        intent.setData(uri);
        try {
            mContext.startActivity(intent);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private void goOppoMainager() {
        doStartApplicationWithPackageName("com.coloros.safecenter");
    }

    /**
     * doStartApplicationWithPackageName("com.yulong.android.security:remote")
     * 和Intent open = getPackageManager().getLaunchIntentForPackage("com.yulong.android.security:remote");
     * startActivity(open);
     * 本質上沒有什麼區別，通過Intent open...開啟比呼叫doStartApplicationWithPackageName方法更快，也是android本身提供的方法
     */
    private void goCoolpadMainager() {
        doStartApplicationWithPackageName("com.yulong.android.security:remote");
      /*  Intent openQQ = getPackageManager().getLaunchIntentForPackage("com.yulong.android.security:remote");
        startActivity(openQQ);*/
    }

    private void goVivoMainager() {
        doStartApplicationWithPackageName("com.bairenkeji.icaller");
     /*   Intent openQQ = getPackageManager().getLaunchIntentForPackage("com.vivo.securedaemonservice");
        startActivity(openQQ);*/
    }

    /**
     * 此方法在手機各個機型設定中已經失效
     *
     * @return
     */
    private Intent getAppDetailSettingIntent() {
        Intent localIntent = new Intent();
        localIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        if (Build.VERSION.SDK_INT >= 9) {
            localIntent.setAction("android.settings.APPLICATION_DETAILS_SETTINGS");
            localIntent.setData(Uri.fromParts("package", mContext.getPackageName(), null));
        } else if (Build.VERSION.SDK_INT <= 8) {
            localIntent.setAction(Intent.ACTION_VIEW);
            localIntent.setClassName("com.android.settings", "com.android.settings.InstalledAppDetails");
            localIntent.putExtra("com.android.settings.ApplicationPkgName", mContext.getPackageName());
        }
        return localIntent;
    }

    private void doStartApplicationWithPackageName(String packagename) {
        // 通過包名獲取此APP詳細資訊，包括Activities、services、versioncode、name等等
        PackageInfo packageinfo = null;
        try {
            packageinfo = mContext.getPackageManager().getPackageInfo(packagename, 0);
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
        }
        if (packageinfo == null) {
            return;
        }
        // 建立一個類別為CATEGORY_LAUNCHER的該包名的Intent
        Intent resolveIntent = new Intent(Intent.ACTION_MAIN, null);
        resolveIntent.addCategory(Intent.CATEGORY_LAUNCHER);
        resolveIntent.setPackage(packageinfo.packageName);
        // 通過getPackageManager()的queryIntentActivities方法遍歷
        List<ResolveInfo> resolveinfoList = mContext.getPackageManager()
                .queryIntentActivities(resolveIntent, 0);
        Log.e("PermissionPageManager", "resolveinfoList" + resolveinfoList.size());
        for (int i = 0; i < resolveinfoList.size(); i++) {
            Log.e("PermissionPageManager", resolveinfoList.get(i).activityInfo.packageName + resolveinfoList.get(i).activityInfo.name);
        }
        ResolveInfo resolveinfo = resolveinfoList.iterator().next();
        if (resolveinfo != null) {
            // packageName引數2 = 引數 packname
            String packageName = resolveinfo.activityInfo.packageName;
            // 這個就是我們要找的該APP的LAUNCHER的Activity[組織形式：packageName引數2.mainActivityname]
            String className = resolveinfo.activityInfo.name;
            // LAUNCHER Intent
            Intent intent = new Intent(Intent.ACTION_MAIN);
            intent.addCategory(Intent.CATEGORY_LAUNCHER);
            // 設定ComponentName引數1:packageName引數2:MainActivity路徑
            ComponentName cn = new ComponentName(packageName, className);
            intent.setComponent(cn);
            try {
                mContext.startActivity(intent);
            } catch (Exception e) {
                goIntentSetting();
                e.printStackTrace();
            }
        }
    }
}