Question

我在设置imageButton到我的WebView的左上角时遇到了麻烦，我不知道如何使用布局（线性或相对），我尝试了很多代码块，但没有一个能为我工作

这是我创建imageButton的方式;

ImageButton mImageButton = new ImageButton(context);
        mImageButton.setImageResource(R.drawable.close_button);
        mImageButton.setLayoutParams(new ViewGroup.LayoutParams(width, height));
        mImageButton.setAdjustViewBounds(true);
        mImageButton.setBackgroundDrawable(null);
        mImageButton.setScaleType(ImageView.ScaleType.FIT_CENTER);

这就是我创建和添加我的图像按钮到webview的方式

        WebView mWebView = new WebView(context);
        mWebView.loadData(htmlContent, "text/html", "UTF-8");
        mWebView.addView(mImageButton);

This is how it looks like

关于如何在不使用xml的情况下正确放置它的任何想法，因为我正在尝试为将要分发的jar文件执行此操作

Answer 1

以下xml代码将执行此操作：

<RelativeLayout 
 android:layout_width="match_parent"
android:layout_height="match_parent"
>

<ImageButton
    android:layout_height="wrap_content"
    android:layout_width="wrap_content"
    android:layout_alignParentTop="true"
    />
<WebView
    android:layout_width="match_parent"
    android:layout_height="match_parent"/>
</RelativeLayout>

Answer 2

我认为你应该把你的观点放在RelativeLayout里面。所以我假设你得到一个RelativeLayout对象。以下代码可能有效。创建布局：

RelativeLayout mRelativeLayout = new RelativeLayout(context)

创建WebView并将其添加到布局：

WebView mWebView = new WebView(context);
RelativeLayout.LayoutParams paramsWV = new RelativeLayout.LayoutParams(mRelativeLayout.getWidth(), mRelativeLayout.getHeight);
mParamsWM.addRule(RelativeLayout.LayoutParams.FILL_PARENT);//so the web view fill the layout
mWebView.setLayoutParams(mParamsWM);
mWebView.loadData(htmlContent, "text/html", "UTF-8");
mRelativeLayout.addView(mWebView);

然后是按钮

ImageButton mImageButton = new ImageButton(context);
mImageButton.setImageResource(R.drawable.close_button);
RelativeLayout.LayoutParams paramsB = new RelativeLayout.LayoutParams(width, height);
paramsB.addRule(RelativeLayout.ALIGN_PARENT_TOP);
paramsB.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
mImageButton.setLayoutParams(paramsB);
mImageButton.setAdjustViewBounds(true);
mImageButton.setBackgroundDrawable(null);
mRelativeLayout.addView(mImageButton);
mImageButton.setScaleType(ImageView.ScaleType.FIT_CENTER);

Answer 3

试试这个：

RelativeLayout relativeLayout = (RelativeLayout) findViewById(R.id.mainLayout);

FrameLayout frameLayout = new FrameLayout(this);
frameLayout.setLayoutParams(
        new FrameLayout.LayoutParams(
                FrameLayout.LayoutParams.MATCH_PARENT,
                FrameLayout.LayoutParams.MATCH_PARENT));

View mWebView = new View(this);
mWebView.setBackgroundColor(Color.parseColor("#FF0000"));
mWebView.setLayoutParams(
        new ViewGroup.LayoutParams(
                FrameLayout.LayoutParams.MATCH_PARENT,
                FrameLayout.LayoutParams.MATCH_PARENT));

ImageButton mImageButton = new ImageButton(this);
mImageButton.setImageResource(android.R.drawable.star_big_on);
mImageButton.setLayoutParams(new ViewGroup.LayoutParams(200, 200));
mImageButton.setAdjustViewBounds(true);

frameLayout.addView(mWebView);
frameLayout.addView(mImageButton);

relativeLayout.addView(frameLayout);

我的示例中的

relativeLayout变量是您添加所有元素的容器。另外，您应该使用WebView替换我的View控件

如何在Android

3 个答案: