Android 6.0 运行时权限简洁封装

阅读 3365
收藏 296
2017-01-05
原文链接:www.jianshu.com

Android 6.0 运行时权限简洁封装

本文原创,转载请注明出处。欢迎关注我的 简书

前言:

9月份跳槽到一家创业公司,终于知道为什么干我们这一行的容易猝死...
连续加班一个月,赶出了第一个项目,APP上线后发现权限忘记加了,又马上更新了个版本上去,后续又是新项目,又是功能迭代的,想说梳理下权限这块代码,也没时间动工,趁元旦在家,整理了下相关代码,写了这篇文章,希望对大家有所帮助。

2017.01.03 对跳转设置返回做了进一步的完善,修改点如下:
1.新增SETTINGS_REQUEST_CODE,mPermissionsList 参数
2.showPermissionSettingDialog方法修改
3.重写onActivityResult

参考资料如下:

Android Runtime Permissions
Android 6.0 运行时权限处理完全解析
MeloDev的Android 6.0 运行时权限简洁封装

MeloDev的这篇文章跟我的想法不谋而合,不一样的地方是在于我加了个必要权限判断,开发中我们会发现,有些权限是必须获取到的,不然会影响到一部分的功能,如SD卡权限,当然,如果用户不允许开通此类权限,APP理论上来说还是要允许用户继续使用的,但是我们要在很多地方加入权限判断,很是麻烦,所以干脆流氓一点吧,添加一个必要权限判断,如果必要权限被拒绝了,先弹窗,告知用户去个人中心手动开启,如果不然,直接退出APP....

整个世界都清净了!!!


好了,现在来看看如何封装:

我将运行时权限封装到 BaseActivity 中,BaseActivity 继承AppCompatActivity。
注解都写得很详细了,直接上代码。

回调接口:

/**
 * Created by caihan on 2017/1/1.
 * 权限申请接口
 */

public interface PermissionsResultListener {
    void onPermissionGranted();

    void onPermissionDenied();
}

BaseActivity里的权限代码:

/**
 * Created by caihan on 2017/1/1.
 */
public abstract class BaseActivity extends AppCompatActivity{
    private static final String TAG = "BaseActivity";
    protected Context mContext;

    // For Android 6.0
    private PermissionsResultListener mListener;
    //申请标记值
    public static final int REQUEST_CODE_ASK_PERMISSIONS = 100;
    //手动开启权限requestCode
    public static final int SETTINGS_REQUEST_CODE = 200;
    //拒绝权限后是否关闭界面或APP
    private boolean mNeedFinish = false;
    //界面传递过来的权限列表,用于二次申请
    private ArrayList<String> mPermissionsList = new ArrayList<>();
    //必要全选,如果这几个权限没通过的话,就无法使用APP
    protected static final ArrayList<String> FORCE_REQUIRE_PERMISSIONS = new ArrayList<String>() {
        {
            add(Manifest.permission.INTERNET);
            add(Manifest.permission.READ_EXTERNAL_STORAGE);
            add(Manifest.permission.WRITE_EXTERNAL_STORAGE);
            add(Manifest.permission.ACCESS_FINE_LOCATION);
            add(Manifest.permission.ACCESS_COARSE_LOCATION);
        }
    };

    @Override
    protected void onNewIntent(Intent intent) {
        super.onNewIntent(intent);
        if (intent != null) {
            setIntent(intent);
            mContext = this;
        }
    }

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //没actionbar
        supportRequestWindowFeature(Window.FEATURE_NO_TITLE);
        //取消横屏
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
        //输入法弹出的时候不顶起布局
        //如果我们不设置"adjust..."的属性,对于没有滚动控件的布局来说,采用的是adjustPan方式,
        // 而对于有滚动控件的布局,则是采用的adjustResize方式。
        getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN |
                WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN);
//        getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE |
//                WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN);
        mContext = this;
    }

    /**
     * 权限允许或拒绝对话框
     *
     * @param permissions 需要申请的权限
     * @param needFinish  如果必须的权限没有允许的话,是否需要finish当前 Activity
     * @param callback    回调对象
     */
    protected void requestPermission(final ArrayList<String> permissions, final boolean needFinish,
                                     final PermissionsResultListener callback) {
        if (permissions == null || permissions.size() == 0) {
            return;
        }
        mNeedFinish = needFinish;
        mListener = callback;
        mPermissionsList = permissions;
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            //获取未通过的权限列表
            ArrayList<String> newPermissions = checkEachSelfPermission(permissions);
            if (newPermissions.size() > 0) {// 是否有未通过的权限
                requestEachPermissions(newPermissions.toArray(new String[newPermissions.size()]));
            } else {// 权限已经都申请通过了
                if (mListener != null) {
                    mListener.onPermissionGranted();
                }
            }
        } else {
            if (mListener != null) {
                mListener.onPermissionGranted();
            }
        }
    }

    /**
     * 申请权限前判断是否需要声明
     *
     * @param permissions
     */
    private void requestEachPermissions(String[] permissions) {
        if (shouldShowRequestPermissionRationale(permissions)) {// 需要再次声明
            showRationaleDialog(permissions);
        } else {
            ActivityCompat.requestPermissions(BaseActivity.this, permissions,
                    REQUEST_CODE_ASK_PERMISSIONS);
        }
    }

    /**
     * 弹出声明的 Dialog
     *
     * @param permissions
     */
    private void showRationaleDialog(final String[] permissions) {
        final AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("提示")
                .setMessage("为了应用可以正常使用,请您点击确认申请权限。")
                .setPositiveButton("确认",
                        new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                ActivityCompat.requestPermissions(BaseActivity.this, permissions,
                                        REQUEST_CODE_ASK_PERMISSIONS);
                            }
                        })
                .setNegativeButton("取消",
                        new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                dialog.dismiss();
                                if (mNeedFinish) finish();
                            }
                        })
                .setCancelable(false)
                .show();
    }

    /**
     * 检察每个权限是否申请
     *
     * @param permissions
     * @return newPermissions.size > 0 表示有权限需要申请
     */
    private ArrayList<String> checkEachSelfPermission(ArrayList<String> permissions) {
        ArrayList<String> newPermissions = new ArrayList<String>();
        for (String permission : permissions) {
            if (ContextCompat.checkSelfPermission(this, permission) != PackageManager.PERMISSION_GRANTED) {
                newPermissions.add(permission);
            }
        }
        return newPermissions;
    }

    /**
     * 再次申请权限时,是否需要声明
     *
     * @param permissions
     * @return
     */
    private boolean shouldShowRequestPermissionRationale(String[] permissions) {
        for (String permission : permissions) {
            if (ActivityCompat.shouldShowRequestPermissionRationale(this, permission)) {
                return true;
            }
        }
        return false;
    }

    /**
     * 申请权限结果的回调
     *
     * @param requestCode
     * @param permissions
     * @param grantResults
     */
    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
                                           @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == REQUEST_CODE_ASK_PERMISSIONS && permissions != null) {
            // 获取被拒绝的权限列表
            ArrayList<String> deniedPermissions = new ArrayList<>();
            for (String permission : permissions) {
                if (ContextCompat.checkSelfPermission(this, permission) != PackageManager.PERMISSION_GRANTED) {
                    deniedPermissions.add(permission);
                }
            }
            // 判断被拒绝的权限中是否有包含必须具备的权限
            ArrayList<String> forceRequirePermissionsDenied =
                    checkForceRequirePermissionDenied(FORCE_REQUIRE_PERMISSIONS, deniedPermissions);
            if (forceRequirePermissionsDenied != null && forceRequirePermissionsDenied.size() > 0) {
                // 必备的权限被拒绝,
                if (mNeedFinish) {
                    showPermissionSettingDialog();
                } else {
                    if (mListener != null) {
                        mListener.onPermissionDenied();
                    }
                }
            } else {
                // 不存在必备的权限被拒绝,可以进首页
                if (mListener != null) {
                    mListener.onPermissionGranted();
                }
            }
        }
    }

    /**
     * 检查回调结果
     *
     * @param grantResults
     * @return
     */
    private boolean checkEachPermissionsGranted(int[] grantResults) {
        for (int result : grantResults) {
            if (result != PackageManager.PERMISSION_GRANTED) {
                return false;
            }
        }
        return true;
    }

    private ArrayList<String> checkForceRequirePermissionDenied(
            ArrayList<String> forceRequirePermissions, ArrayList<String> deniedPermissions) {
        ArrayList<String> forceRequirePermissionsDenied = new ArrayList<>();
        if (forceRequirePermissions != null && forceRequirePermissions.size() > 0
                && deniedPermissions != null && deniedPermissions.size() > 0) {
            for (String forceRequire : forceRequirePermissions) {
                if (deniedPermissions.contains(forceRequire)) {
                    forceRequirePermissionsDenied.add(forceRequire);
                }
            }
        }
        return forceRequirePermissionsDenied;
    }

    /**
     * 手动开启权限弹窗
     */
    private void showPermissionSettingDialog() {
        final AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("提示")
                .setMessage("必要的权限被拒绝")
                .setPositiveButton("去设置", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialogInterface, int i) {
                        AppUtils.getAppDetailsSettings(BaseActivity.this, SETTINGS_REQUEST_CODE);
                    }
                })
                .setNegativeButton("取消", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialogInterface, int i) {
                        dialogInterface.dismiss();
                        if (mNeedFinish) AppUtils.restart(BaseActivity.this);
                    }
                })
                .setCancelable(false)
                .show();
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        //如果需要跳转系统设置页后返回自动再次检查和执行业务 如果不需要则不需要重写onActivityResult
        if (requestCode == SETTINGS_REQUEST_CODE) {
            requestPermission(mPermissionsList, mNeedFinish, mListener);
        }
    }

}

跳转应用设置和关闭APP进程的代码:

    /**
     * 获取App具体设置
     *
     * @param context 上下文
     */
    public static void getAppDetailsSettings(Context context, int requestCode) {
        getAppDetailsSettings(context, context.getPackageName(), requestCode);
    }

    /**
     * 获取App具体设置
     *
     * @param context     上下文
     * @param packageName 包名
     */
    public static void getAppDetailsSettings(Context context, String packageName, int requestCode) {
        if (StringUtils.isSpace(packageName)) return;
        ((AppCompatActivity) context).startActivityForResult(
                IntentUtils.getAppDetailsSettingsIntent(packageName), requestCode);
    }

    /**
     * 获取App具体设置的意图
     *
     * @param packageName 包名
     * @return intent
     */
    public static Intent getAppDetailsSettingsIntent(String packageName) {
        Intent intent = new Intent("android.settings.APPLICATION_DETAILS_SETTINGS");
        intent.setData(Uri.parse("package:" + packageName));
        return intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    }

    /**
     * 通过任务管理器杀死进程
     * 需添加权限 {@code <uses-permission android:name="android.permission.RESTART_PACKAGES"/>}</p>
     *
     * @param context
     */
    public static void restart(Context context) {
        int currentVersion = android.os.Build.VERSION.SDK_INT;
        if (currentVersion > android.os.Build.VERSION_CODES.ECLAIR_MR1) {
            Intent startMain = new Intent(Intent.ACTION_MAIN);
            startMain.addCategory(Intent.CATEGORY_HOME);
            startMain.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            context.startActivity(startMain);
            System.exit(0);
        } else {// android2.1
            ActivityManager am = (ActivityManager) context.getSystemService(ACTIVITY_SERVICE);
            am.restartPackage(context.getPackageName());
        }
    }

界面上调用代码:
这里我直接传了必要权限数列过去,因此如果有任何一个权限没通过,都会退出APP,
如果你打算分场合请求权限的话,可以修改下我的代码,必要和非必要权限都从界面传递过来就可以了。

        requestPermission(FORCE_REQUIRE_PERMISSIONS, true, new PermissionsResultListener() {
            @Override
            public void onPermissionGranted() {
                ToastUtils.showShortToast("已申请权限");
            }

            @Override
            public void onPermissionDenied() {
                ToastUtils.showShortToast("拒绝申请权限");
            }
        });

代码相对来说比较简单,我就不上传到GitHub了,如果大家有更好的封装方式的话,可以交流下。

评论