常用

ToastUtil

public class ToastUtil {
    private static String TAG = ToastUtil.class.getSimpleName();

    public static void init() {}

    public static void show(final Context context, final String msg) {
        show(context, msg, Toast.LENGTH_SHORT);
    }

    public static void show(final Context context, final String msg, final int duration) {
        if (Looper.myLooper() == Looper.getMainLooper()) {
            Toast.makeText(context, msg, duration).show();
            return;
        }
        new Handler(Looper.getMainLooper()).post(new Runnable() {
            @Override
            public void run() {
                Toast.makeText(context, msg, duration).show();
            }
        });
    }
}