从片段发送文本自定义视图，我想用canvas.drawText [英] Sending text from fragment to custom view where I want to use canvas.drawText

问题描述

我是新来的Andr​​oid，并希望从碎片一些文本传递到自定义视图。里面的自定义视图我想用 canvas.drawText 来的字符串中的位置。我想用其原因 canvas.drawText 是某些图形的位置一致。

I am new to Android and want to pass some text from a fragment to a custom view. Inside the custom view I want to use canvas.drawText to position the string. The reason I want to use canvas.drawText is for consistency with the position of some graphics.

什么是程序呢？

只是为了澄清，我的片段有这样的事情：

Just to clarify, my fragment has something like this:

public class Fragment1 extends Fragment {

private TextView view;
private TextView txtBox;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_layout, container,false);
    txtBox = (TextView) view.findViewById(R.id.TxtBox);
            String myString = "testing";
            txtBox.setText(myString);
    return view;
    }
}

我为视图1（我的自定义视图）一个fragment_layout.xml文件：

I have a fragment_layout.xml file for View1 (my custom view):

<com.example.stuff.View1
    android:id="@+id/TxtBox"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

我想调用，使自定义视图中：

The call I am wish to make inside the custom view:

public class View1 extends TextView {

    //constructors:
    public View1(Context context, AttributeSet ats, int ds) {
        super(context, ats, ds);
        init();
    }

    public View1(Context context) {
        super(context);
        init();
    }

    public View1(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }
...
canvas.drawText(myString, margin1, margin2, paint);
....
}

...和我要的是从Fragment1.java获得的myString 到View1.java。
谢谢！

...and what I want is to get myString from Fragment1.java to the View1.java. Thanks!

推荐答案

我能够用我收到的答案来解决问题的here （使用的setter / getter方法​​）和<一个href=\"http://stackoverflow.com/questions/14913973/nullpointerexception-when-accessing-relativelayout-from-a-custom-view\">here （MIS自定义布局通话摆脱导致空指针异常）。

I was able to solve the problem with the answers I received here (using setters/getters) and here (getting rid of the resulting NullPointer exception from mis-defined layout calls).

这篇关于从片段发送文本自定义视图，我想用canvas.drawText的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！