BaseActivity

import android.Manifest;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.Toast;

import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;

public abstract class BaseActivity extends AppCompatActivity implements View.OnClickListener{
    private String TAG = BaseActivity.class.getSimpleName();
    private int REQUEST_CODE = 1234;
    private String[] permissions = new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE,
            Manifest.permission.READ_EXTERNAL_STORAGE,
            Manifest.permission.ACCESS_FINE_LOCATION,
            Manifest.permission.ACCESS_COARSE_LOCATION,
            Manifest.permission.INTERNET,
            Manifest.permission.ACCESS_WIFI_STATE,
            Manifest.permission.CHANGE_WIFI_STATE,
            Manifest.permission.ACCESS_NETWORK_STATE,
            Manifest.permission.CHANGE_NETWORK_STATE,
            Manifest.permission.READ_PHONE_STATE,
            Manifest.permission.ACCESS_LOCATION_EXTRA_COMMANDS,
            Manifest.permission.WRITE_EXTERNAL_STORAGE};


    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M
                && checkSelfPermission(permissions[0]) != PackageManager.PERMISSION_GRANTED
                && checkSelfPermission(permissions[1]) != PackageManager.PERMISSION_GRANTED) {
            requestPermission();
        }
        setContentView(getLayoutId());
    }

    public abstract int getLayoutId();


    private void requestPermission() {
        requestPermission(permissions);
    }

    protected void  requestPermission(String[] permissions) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            requestPermissions(permissions, REQUEST_CODE);
        }
    }

    protected void initViewsWithClick(int...viewIds) {
        for (int viewId : viewIds){
            (getView(viewId)).setOnClickListener(this);
        }
    }

    @Override
    public void onClick(View v) {
        onViewClick(v);
    }


    protected void  showToast(String msg) {
        if (TextUtils.isEmpty(msg)) {
            return;
        }
        Toast.makeText(this, msg, Toast.LENGTH_SHORT).show();
    }


    protected  <T extends View> T getView(int viewId) {
        return (T) findViewById(viewId);
    }

    public abstract void  onViewClick(View view);

}