动态获取权限, 以及事件处理

public class MainActivity extends AppCompatActivity {

private static final int REQUEST_CODE = 0; // 请求码

// 所需的全部权限
static final String[] PERMISSIONS = new String[]{
        Manifest.permission.RECORD_AUDIO,
        Manifest.permission.MODIFY_AUDIO_SETTINGS
};

@Bind(R.id.main_t_toolbar) Toolbar mTToolbar;

private PermissionsChecker mPermissionsChecker; // 权限检测器

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    ButterKnife.bind(this);

    setSupportActionBar(mTToolbar);

    mPermissionsChecker = new PermissionsChecker(this);
}

@Override protected void onResume() {
    super.onResume();

    // 缺少权限时, 进入权限配置页面
    if (mPermissionsChecker.lacksPermissions(PERMISSIONS)) {
        startPermissionsActivity();
    }
}

private void startPermissionsActivity() {
    PermissionsActivity.startActivityForResult(this, REQUEST_CODE, PERMISSIONS);
}

@Override protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    // 拒绝时, 关闭页面, 缺少主要权限, 无法运行
    if (requestCode == REQUEST_CODE && resultCode == PermissionsActivity.PERMISSIONS_DENIED) {
        finish();
    }
}

}