以编程方式单击时突出显示 TextView [英] Highlight TextView when clicked programmatically

问题描述

我动态生成像按钮一样工作的 TextViews.现在我想在它们被按下时突出显示它们.诸如更改文本颜色或背景颜色之类的东西.我试过使用选择器，但它不起作用.

I dynamically generate TextViews which work like buttons. Now i want to highlight them when they get pressed. Something like change Text color or background color. I have tried to use selector, but it doesn't work.

<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_focused="true" android:color="#ffffff"/>
<item android:state_pressed="true" android:state_enabled="false" android:color="#ffffff" />
</selector>

这里是我创建 TextViews 的循环.

Here my loop for creating the TextViews.

int z = 0;
    for (MOKGenericDataItem d : data) {
        if (d.getButtonText() != null) {
            final int pagePosition = z;
            TextView btn = new TextView(getActivity());
            btn.setId(z);
            final int id_ = btn.getId();
            btn.setText(d.getButtonText());
            btn.setTextSize(TypedValue.COMPLEX_UNIT_SP, 30);
            btn.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT, 1f));
            btn.setGravity(Gravity.CENTER);

            mLineareLayoutViewPagerButtons.addView(btn);

            btn1 = ((TextView) view.findViewById(id_));
            btn1.setOnClickListener(new View.OnClickListener() {
                public void onClick(View view) {
                    mViewPager.setCurrentItem(pagePosition,false);
                }
            });
        }
        z++;
    }

推荐答案

首先，您的这一行会产生歧义，因为您将变量名称设为 btn1(将其与按钮相关联)并且您正在参考TextView,

First of all your this line is creating ambiguity as you are taking a variable name as btn1 (which is relating it to button)and you are taking a reference of TextView,

 btn1 = ((TextView) view.findViewById(id_));

无论如何，一步一步来，

• 在 drawable 文件夹中创建一个类似于 label_bg.xml 的 xml，如下所示:

• create an xml like label_bg.xml like the following in the drawable folder:

 <?xml version="1.0" encoding="utf-8"?>
    <selector xmlns:android="http://schemas.android.com/apk/res/android">
        <item android:drawable="@drawable/pressed_color"
              android:state_pressed="true" />    
        <item android:drawable="@drawable/normal_color" />
    </selector>

在 values 文件夹中创建另一个 xml 如下所示，命名为 labelcolors.xml

In values folder create another xml like the following,named as labelcolors.xml

 <?xml version="1.0" encoding="utf-8"?>
<resources>
<drawable name="pressed_color">#7ec0ee</drawable> <!--custom color for pressed state -->
<drawable name="normal_color">#00FFFFFF</drawable> <!--transperent color for normal state -->
</resources>

现在设置标签的背景为label_bg.xml

  <TextView
    android:id="@+id/yourlabel"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginLeft="760dp"
    android:layout_marginTop="515dp"
    android:background="@drawable/label_bg"   <!--like this-->
    android:text="LabelText"
    android:textSize="20dp" />

当您动态添加视图时，您需要以编程方式为每个 textView 设置背景.对于 textview<上的调用 setBackgroundResource()/code> 对象创建并设置 label.xml 作为背景

as you are dynamically adding the views so you need to set the background for your each textView programatically .For that call setBackgroundResource() on the textview object created and set label.xml as background

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