权限申请

public class PermissionActivity extends Activity{
    private static final String PERVIOUS_INTENT = "pervious_intent";
    private static final String REQUEST_PERMISSIONS = "request_permissions";
    private static final String PACKAGE_URL_SCHEME = "package:";
    private static final int REQUEST_CODE = 100;
    private String[] mRequestedPermissons;


    public static boolean checkAndRequestPermission(Activity activity, String[] permissions) {
        String[] neededPermissions = checkRequestedPermission(activity, permissions);
        if (neededPermissions.length == 0) {
            return false;
        } else {
            Intent intent = new Intent();
            intent.setClass(activity.getApplicationContext(), PermissionActivity.class);
            intent.putExtra(REQUEST_PERMISSIONS, permissions);
            activity.startActivity(intent);
            return true;
        }
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mRequestedPermissons = getIntent().getStringArrayExtra(REQUEST_PERMISSIONS);

        if (savedInstanceState == null && mRequestedPermissons != null) {
            String[] neededPermissions =
                    checkRequestedPermission(PermissionActivity.this, mRequestedPermissons);
            requestPermissions(neededPermissions, REQUEST_CODE);
        }
    }

    private static String[] checkRequestedPermission(Activity activity, String[] permissionName) {
        boolean isPermissionGranted = true;
        List<String> needRequestPermission = new ArrayList<String>();
        for (String tmp : permissionName) {
            isPermissionGranted = (PackageManager.PERMISSION_GRANTED ==
                    activity.checkSelfPermission(tmp));
            if (!isPermissionGranted) {
                needRequestPermission.add(tmp);
            }
        }
        String[] needRequestPermissionArray = new String[needRequestPermission.size()];
        needRequestPermission.toArray(needRequestPermissionArray);
        return needRequestPermissionArray;
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions,
                int[] grantResults) {
        boolean isAllPermissionsGranted = true;
        if (requestCode != REQUEST_CODE || permissions == null || grantResults == null ||
                permissions.length == 0 || grantResults.length == 0) {
            isAllPermissionsGranted = false;
        } else {
            for (int i : grantResults) {
                if (i != PackageManager.PERMISSION_GRANTED)
                    isAllPermissionsGranted = false;
            }
        }
        if(isAllPermissionsGranted) {
            Intent intent = new Intent();
            intent.setClass(getApplicationContext(), MainActivity.class);
            startActivity(intent);

            finish();
        } else {
            showMissingPermissionDialog();
        }
    }

    private void showMissingPermissionDialog() {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle(R.string.dialog_title_help);
        builder.setMessage(R.string.dialog_content);
        builder.setNegativeButton(R.string.dialog_button_quit,
        new DialogInterface.OnClickListener() {
            @Override public void onClick(DialogInterface dialog, int which) {
                finish();
            }
        });
        builder.setPositiveButton(R.string.dialog_button_settings,
        new DialogInterface.OnClickListener() {
            @Override public void onClick(DialogInterface dialog, int which) {
                Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
                intent.setData(Uri.parse(PACKAGE_URL_SCHEME + getPackageName()));
                startActivity(intent);
                finish();
            }
        });
        builder.show();
    }
}

 

 if (!PermissionActivity.checkAndRequestPermission(this, REQUIRE_PERMISSIONS)) {

            // Initialize UI.
            setContentView(R.layout.activity_user_main);
}

private final static String[] REQUIRE_PERMISSIONS = {
        permission.READ_EXTERNAL_STORAGE,
        permission.WRITE_EXTERNAL_STORAGE,
        permission.READ_PHONE_STATE,
        permission.RECORD_AUDIO,
        permission.ACCESS_COARSE_LOCATION,
        permission.ACCESS_FINE_LOCATION,
    };