对于ImageButton的图像没有变化如预期 [英] Image for ImageButton doesn't change as intended

问题描述

我在这里的目标是从的ImageButton（ibChamp）改变图像。

My goal here is to change an Image from an ImageButton(ibChamp).

package com.example.custombuilds;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;z
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageButton;

public class Champions extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.champions);

    ImageButton ibAnnie = (ImageButton) findViewById(R.id.ibAnnie);

    ibAnnie.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View arg0) {
            // TODO Check this for errors
            RelativeLayout test = (RelativeLayout) findViewById(R.id.layoutChampions);
            LayoutInflater layoutInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            View view = layoutInflater.inflate(R.layout.create_build_page, null);
            test.addView(view);
            ImageButton img = (ImageButton) view.findViewById(R.id.ibChamp);
            img.setImageResource(R.drawable.ic_launcher);

            try {
                Intent open = new Intent("android.intent.action.CREATE");
                startActivity(open);
            } catch (Exception e) {

            }

        }
    });
}
}

注意的ImageButton ibChamp从XML布局create_build_page，而不是XML冠军。
这code运行没有崩溃，但是从的ImageButton ibChamp图像不会改变，这是我要做的。我会很乐意提供任何其他附加信息。

Note that the ImageButton ibChamp is from the xml layout create_build_page, and not the xml champions. This code runs without crashing, but the Image from the Imagebutton ibChamp does not change, which is what I am trying to do. I will be happy to provide any other additional information.

推荐答案

您在的onClick坐大ibChamp。这将创建一个新的ImageButton。你不会看到它，直到你用addView从父。

You are inflating "ibChamp" in onClick. That creates a new ImageButton. You will not see it until you use "addView" from the parent.

您可以将您的XML，但是你需要为了改变它才能到活动中现有按钮的引用。或者添加新的按钮，删除旧...

You can add your XML, but you need to get a reference to an existing button in Activity in order to change it. Or else add the new button and remove an old one...

在换句话说，改变这个

        LayoutInflater layoutInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        View view = layoutInflater.inflate(R.layout.create_build_page, null);
        ImageButton img = (ImageButton) view.findViewById(R.id.ibChamp);

这样：

        ImageButton img = (ImageButton)findViewById(R.id.ibChamp);

和它可能会做你想要的。

And it will probably do what you want.

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