6.0以上权限检查封装类 6.0以上权限检查封装类

6.0以上权限检查封装类

import android.app.Activity; import android.content.Context; import android.content.Intent; import android.content.pm.PackageManager; import android.net.Uri; import android.os.Build; import android.provider.Settings; import android.support.annotation.NonNull; import android.support.v4.app.ActivityCompat; import android.support.v4.content.ContextCompat; import java.util.ArrayList; /** * * 检查权限的类 */public abstract class PermissionsManager {private static final String PACKAGE_URL_SCHEME = "package:"; private Activity mTargetActivity; /** * 权限通过 * * @param requestCode 请求码 */ public abstract void authorized(int requestCode); /** * 有权限没有通过 * * @param requestCode请求码 * @param lacksPermissions 被拒绝的权限 */ public abstract void noAuthorization(int requestCode, String[] lacksPermissions); /** * Android 6.0 以下的系统不校验权限 * * Android 6.0 以下的系统，只要在清单文件中加入了权限，即使在设置中拒绝，checkSelfPermission也会返回已授权！校验没有意义。 */ public abstract void ignore(); /** * 构造方法 * * @param targetActivity 目标Activity 申请权限的Activity */ public PermissionsManager(Activity targetActivity) { mTargetActivity = targetActivity; }/** * 检查权限 * * @param requestCode 请求码 * @param permissions 准备校验的权限 */ public void checkPermissions(int requestCode, String... permissions) {if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { // Android 6.0 动态检查权限 ArrayList lacks = new ArrayList<>(); for (String permission : permissions) { if (ContextCompat.checkSelfPermission(mTargetActivity.getApplicationContext(), permission) == PackageManager.PERMISSION_DENIED) { lacks.add(permission); } }if (!lacks.isEmpty()) { // 有权限没有授权 String[] lacksPermissions = new String[lacks.size()]; lacksPermissions = lacks.toArray(lacksPermissions); //申请CAMERA权限 ActivityCompat.requestPermissions(mTargetActivity, lacksPermissions, requestCode); } else { // 授权 authorized(requestCode); } } else { // 6.0 以下版本不校验权限 ignore(); } }/** * 复查权限 * * 调用checkPermissions方法后，会提示用户对权限的申请做出选择，选择以后（同意或拒绝） * TargetActivity会回调onRequestPermissionsResult方法， * 在onRequestPermissionsResult回调方法里，我们调用此方法来复查权限，检查用户的选择是否通过了权限申请 * * @param requestCode请求码 * @param permissions权限 * @param grantResults 授权结果 */ public void recheckPermissions(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) { for (int grantResult : grantResults) { if (grantResult == PackageManager.PERMISSION_DENIED) { // 未授权 noAuthorization(requestCode, permissions); return; } } // 授权 authorized(requestCode); }/** * 进入应用设置 * * @param context context */ public static void startAppSettings(Context context) { Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); intent.setData(Uri.parse(PACKAGE_URL_SCHEME + context.getPackageName())); context.startActivity(intent); } }

调用示例
【6.0以上权限检查封装类】Activity

oncreate(){// 动态权限检查器 mPermissionsManager = new PermissionsManager(this) { @Override public void authorized(int requestCode) { Toast.makeText(getApplicationContext(), "权限通过！", Toast.LENGTH_SHORT).show(); }@Override public void noAuthorization(int requestCode, String[] lacksPermissions) { AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this); builder.setTitle("提示"); builder.setMessage("缺少相机权限！"); builder.setPositiveButton("设置权限", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { PermissionsManager.startAppSettings(getApplicationContext()); } }); builder.create().show(); }@Override public void ignore() { AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this); builder.setTitle("提示"); builder.setMessage("Android 6.0 以下系统不做权限的动态检查\n如果运行异常\n请优先检查是否安装了 OpenCV Manager\n并且打开了 CAMERA 权限"); builder.setPositiveButton("确认", null); builder.setNeutralButton("设置权限", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { PermissionsManager.startAppSettings(getApplicationContext()); } }); builder.create().show(); } }; }onResume(){ String[] PERMISSIONS = new String[]{Manifest.permission.CAMERA}; // 检查权限 mPermissionsManager.checkPermissions(0, PERMISSIONS); }@Override public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) { super.onRequestPermissionsResult(requestCode, permissions, grantResults); mPermissionsManager.recheckPermissions(requestCode, permissions, grantResults); }