android 简单工具类:BaseActivity Toast

1.BaseActivity的设计实现：

可以为其他activity提供便利工具

public abstract class BaseActivity extends Activity {

 

protected String TAG;

 

protected BaseApplication application;

protected SharedPreferences sp;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

 

TAG = this.getClass().getSimpleName();

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);

application = (BaseApplication) getApplication();

sp = getSharedPreferences(CommonConstants.SP_NAME, MODE_PRIVATE);

}

protected void intent2Activity(Class extends Activity> tarActivity) {

Intent intent = new Intent(this, tarActivity);

startActivity(intent);

}

protected void showToast(String msg) {

ToastUtils.showToast(this, msg, Toast.LENGTH_SHORT);

}

 

protected void showLog(String msg) {

Logger.show(TAG, msg);

}

 

}

2.Toast自定义的实现：可以解决toast接连弹出的问题：

public class ToastUtils {

private static Toast mToast;

/**

* 显示Toast

*/

public static void showToast(Context context, CharSequence text, int duration) {

if(mToast == null) {

mToast = Toast.makeText(context, text, duration);

} else {

mToast.setText(text);

mToast.setDuration(duration);

}

mToast.show();

}

 

}