Android SDK 23 以降の権限確認サンプルq

android_permission_test.java

package com.example.minamo.permissiontest;

import android.Manifest;
import android.content.Context;
import android.content.pm.PackageManager;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

    final int REQUEST_ACCESS_COARSE_LOCATION = 10;
    final int REQUEST_ACCESS_FINE_LOCATION = 11;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        setupButton();
    }

    private void setupButton() {
        final Context self = this;
        Button button = (Button) findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                // 権限の確認。PERMISSION_GRANTED でない場合、権限リクエストのダイアログが表示される
                int coarseLocationPermission = ContextCompat.checkSelfPermission(self, Manifest.permission.ACCESS_COARSE_LOCATION);
                int fineLocationPermission = ContextCompat.checkSelfPermission(self, Manifest.permission.ACCESS_FINE_LOCATION);
                if (coarseLocationPermission != PackageManager.PERMISSION_GRANTED) {
                    ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.ACCESS_COARSE_LOCATION}, REQUEST_ACCESS_COARSE_LOCATION);
                }
                if (fineLocationPermission != PackageManager.PERMISSION_GRANTED) {
                    ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.ACCESS_COARSE_LOCATION}, REQUEST_ACCESS_FINE_LOCATION);
                }
            }
        });
    }

    // 権限ダイアログの表示時や、ボタン押下時に反応する
    @Override
    public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
        switch (requestCode) {
            case REQUEST_ACCESS_FINE_LOCATION:
            case REQUEST_ACCESS_COARSE_LOCATION:
                if (grantResults.length <= 0) {
                    return;
                }
                if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                    // OK
                } else if(grantResults[0] == PackageManager.PERMISSION_DENIED) {
                    // NG
                    // 「許可しない」を選択した時にも反応
                    // リクエストを出すべきか、出しても良いかの判断
                    if (shouldShowRequestPermissionRationale(Manifest.permission.ACCESS_FINE_LOCATION)) {
                        new AlertDialog.Builder(this)
                            .setTitle("パーミッション")
                            .setMessage("リクエストを表示すべき")
                            .setPositiveButton("OK", null)
                            .show();
                    } else {
                        new AlertDialog.Builder(this)
                                .setTitle("パーミッション")
                                .setMessage("リクエストを表示してはダメ")
                                .setPositiveButton("OK", null)
                                .show();
                    }
                } else {
                    // ?
                }
                return;
        }
    }
}