android Toast 长期显示解决方案

来源：互联网发布：mp3格式转换器mac版编辑：程序博客网时间：2024/04/30 07:20

自己写了一个简化类，把Toast封装在里面，可以满足基本应用。

public class MyToast {

    private static final String TAG = "MyToast";

    public static final int LENGTH_MAX = -1;    //show until hide() function invoked

    boolean mCanceled = true;
    Handler mHandler;
    Context mContext;
    Toast mToast;

    public MyToast(Context context) {
        this(context,new Handler());
    }

    public MyToast(Context context,Handler h) {
        mContext = context;
        mHandler = h;
        mToast = Toast.makeText(mContext,"",Toast.LENGTH_SHORT);
        mToast.setGravity(Gravity.BOTTOM, 0, 0);
    }

    public void show(int resId,int duration) {
        mToast.setText(resId);
        if(duration != LENGTH_MAX) {
            mToast.setDuration(duration);
            mToast.show();
        } else if(mCanceled) {
            mToast.setDuration(Toast.LENGTH_LONG);
            mCanceled = false;
            showUntilCancel();
        }
    }

    public void show(String text,int duration) {
        mToast.setText(text);
        if(duration != LENGTH_MAX) {
            mToast.setDuration(duration);
            mToast.show();
        } else {
            if(mCanceled) {
                mToast.setDuration(Toast.LENGTH_LONG);
                mCanceled = false;
                showUntilCancel();
            }
        }
    }

    public void hide() {
        Log.d(TAG,"hide");
        mToast.cancel();
        mCanceled = true;
    }

    public boolean isShowing() {
        return !mCanceled;
    }

    private void showUntilCancel() {
        if(mCanceled)
            return;
        mToast.show();
        mHandler.postDelayed(new Runnable() {
            public void run() {
                showUntilCancel();
            }
        },3000);
    }

}