我想要的是更改可访问性顺序,即按按钮后,屏幕阅读器(在该Android案例中为话语提示)读取元素的顺序。这是我到目前为止尝试过的方法,但是它不起作用,顺序仍然是最初的降序排列。(在我的示例中,按钮的顺序为b1,b2,b3,在按按钮更改顺序后,我希望该顺序变为b3,b1,b2)。
CODE:
Button b1,b2,b3, changeorder;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
LinearLayout linearlayout = findViewById(R.id.linearlayout);
changeorder = new Button(this);
changeorder.setText("Presso to change order");
changeorder.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.i("BUTTON","Clicked change order button");
changeorder.setAccessibilityTraversalBefore(b3.getId());
b3.setAccessibilityTraversalAfter(changeorder.getId());
b3.setAccessibilityTraversalBefore(b1.getId());
b1.setAccessibilityTraversalAfter(b3.getId());
b1.setAccessibilityTraversalBefore(b2.getId());
b2.setAccessibilityTraversalAfter(b1.getId());
changeorder.setText("Order changed b3,b1,b2");
}
});
changeorder.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES);
linearlayout.addView(changeorder);
b1 = new Button(this);
b1.setText("BUTTON 1");
b1.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES);
linearlayout.addView(b1);
b2 = new Button(this);
b2.setText("BUTTON 2");
b2.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES);
linearlayout.addView(b2);
b3 = new Button(this);
b3.setText("BUTTON 3");
b3.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES);
linearlayout.addView(b3);
}
这对于评论来说太长了,不是这样的“答案”。
请勿尝试更改活动元素的遍历顺序(按下按钮时该按钮将为该按钮)。
即删除changeorder.setAccessibilityTraversalBefore(b3.getId());
位。
还请记住,您只需要使用一个版本的setAccessibilityTraversal
作为b3.setAccessibilityTraversalBefore(b1.getId());
与b1.setAccessibilityTraversalAfter(b3.getId());
相同
因此简化为:-
public void onClick(View v) {
Log.i("BUTTON","Clicked change order button");
b3.setAccessibilityTraversalAfter(changeorder.getId());
b1.setAccessibilityTraversalAfter(b3.getId());
b2.setAccessibilityTraversalAfter(b1.getId());
changeorder.setText("Order changed b3,b1,b2");
etc.