Question

我在屏幕的xml中创建了一个像这样的按钮

 <?xml version="1.0" encoding="utf-8"?>
  <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:background="@drawable/bg">


       <Button android:text="Lets Get Started"        

              android:background="@drawable/btnbg"  
              android:id="@+id/btn_nav_let_strtd"android:layout_width="wrap_content" 
               android:layout_height="35px" 
               android:textColor="#FFFFFF"
               android:layout_alignParentLeft="true"
               android:drawableRight="@drawable/arrow"
               android:drawableLeft="@drawable/nav_getstart">
               </Button>

设置点击听众

公共类NavigationScreen扩展了Activity实现OnClickListener { 私人按钮btn_nav_lets_get_strtd;

private LinearLayout ll_get_started;
@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.navigation);
    btn_nav_lets_get_strtd = (Button) findViewById(R.id.btn_nav_let_strtd); 


    btn_nav_lets_get_strtd.setClickable(true);




}
private void setOnclickListeners() {
    btn_nav_lets_get_strtd.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
           System.out.println("clicked");
           Toast.makeText(NavigationScreen.this, "fgd",Toast.LENGTH_SHORT).show();
         }
     });



}

}

但是当我尝试单击此按钮时，它不可点击而不可聚焦..如何将其设置为可点击???

并且drawable不是位图，它是一个statlist drawable btnbg.xmlis这里

<selector xmlns:android="http://schemas.android.com/apk/res/android"
android:constantSize="true"
android:dither="true"
android:variablePadding="true" >
<item
    android:drawable="@drawable/nav_blue_bar"
    android:state_pressed="true"
    />

任何帮助将不胜感激......

Answer 1

在您的方法setOnClickListeners()中查看您的代码，您没有调用方法onCreate()！，

要解决您的问题，您应该像这样调用您的方法：

protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.navigation);
    btn_nav_lets_get_strtd = (Button) findViewById(R.id.btn_nav_let_strtd); 


    btn_nav_lets_get_strtd.setClickable(true);//here you don't need to call this method because the button is clickable by default

//call your method setOnClickListeners() here 
setOnClickListeners();




}
private void setOnclickListeners() {
    btn_nav_lets_get_strtd.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
           System.out.println("clicked");
           Toast.makeText(NavigationScreen.this, "fgd",Toast.LENGTH_SHORT).show();
         }
     });

按钮不可点击？

1 个答案: