让一个Activity只有一个自定义Toast

 

package com.wxlh.ptas.ui;

import android.content.Context;
import android.view.Gravity;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

import com.wxlh.ptas.R;

public class TextToast {

	private Context context;

	private Toast toast;

	public TextToast(Context context) {
		this.context = context;
		toast = new Toast(context);
	}

	private Toast getToast() {
		if (null == toast) {
			toast = new Toast(context);
		}
		return toast;
	}

	public void show(Context context, String msg) {

		Toast toast = getToast();
		TextView textOverlay = new TextView(context);
		LinearLayout mLinearLayout = new LinearLayout(context);
		mLinearLayout.setBackgroundResource(R.drawable.bg_hitchar);
		textOverlay.setText(msg);
		textOverlay.setTextColor(R.color.white);
		textOverlay.setTextSize(70);
		textOverlay.setWidth(100);
		textOverlay.setMinWidth(100);
		textOverlay.setPadding(10, 10, 10, 10);
		textOverlay.setGravity(Gravity.CENTER | Gravity.CENTER_VERTICAL);
		mLinearLayout.addView(textOverlay);
		toast.setView(mLinearLayout);
		toast.setDuration(Toast.LENGTH_SHORT);
		toast.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
		toast.show();
	}
}

 调用:

 

1. private TextToast textToast;
2.textToast = new TextToast(this);
3.textToast.show(DailContact.this, element.substring(0, 1));