在安卓系统中防止双击按钮的最佳方法是什么?
当前回答
The Best and simple solution i found is
1. to create a boolean and set as false (default) like
private boolean itemClicked = false;
/* for a safer side you can also declare boolean false in onCreate() also. */
and at onclick() method check
2. if(!itemClicked)
{
itemClicked = true;
// rest of your coding functionality goes here of onClick method.
}
3. last step is to set boolean false in onResume()
@override
onResume()
{
super.onResume(0);
itemClicked = false;
}
其他回答
Setting the button as clickable false upon clicking and true once it is desired to make the button clickable again is the right approach. For instance, consider the following scenario: you are making a service call upon click of a button and once the service is done you want to display a dialog. For this, once the button is clicked you can set setClickable(false) and once the service responds you will do setClicklable(true) through a reference you pass to your custom dialog. When dialog invokes isShowing() you can trigger the listener and setClicklable(true).
我也遇到了类似的问题,我正在显示一些日期选择器和时间选择器,有时它会被点击2次。我用这个方法解决了这个问题:
long TIME = 1 * 1000;
@Override
public void onClick(final View v) {
v.setEnabled(false);
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
v.setEnabled(true);
}
}, TIME);
}
你可以根据自己的需要改变时间。
我的解决方案是尝试使用一个布尔变量:
public class Blocker {
private static final int DEFAULT_BLOCK_TIME = 1000;
private boolean mIsBlockClick;
/**
* Block any event occurs in 1000 millisecond to prevent spam action
* @return false if not in block state, otherwise return true.
*/
public boolean block(int blockInMillis) {
if (!mIsBlockClick) {
mIsBlockClick = true;
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
mIsBlockClick = false;
}
}, blockInMillis);
return false;
}
return true;
}
public boolean block() {
return block(DEFAULT_BLOCK_TIME);
}
}
并使用如下:
view.setOnClickListener(new View.OnClickListener() {
private Blocker mBlocker = new Blocker();
@Override
public void onClick(View v) {
if (!mBlocker.block(block-Time-In-Millis)) {
// do your action
}
}
});
更新:Kotlin解决方案,使用视图扩展
fun View.safeClick(listener: View.OnClickListener, blockInMillis: Long = 500) {
var lastClickTime: Long = 0
this.setOnClickListener {
if (SystemClock.elapsedRealtime() - lastClickTime < blockInMillis) return@setOnClickListener
lastClickTime = SystemClock.elapsedRealtime()
listener.onClick(this)
}
}
我知道这是一个老问题,但我分享了我找到的解决这个常见问题的最佳方案
btnSomeButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
// Prevent Two Click
Utils.preventTwoClick(view);
// Do magic
}
});
在另一个文件中,比如Utils.java
/**
* Método para prevenir doble click en un elemento
* @param view
*/
public static void preventTwoClick(final View view){
view.setEnabled(false);
view.postDelayed(
()-> view.setEnabled(true),
500
);
}
通用解决方案
@Override
public void onClick(View v) {
tempDisableButton(v);
//all the buttons view..
}
public void tempDisableButton(View viewBtn) {
final View button = viewBtn;
button.setEnabled(false);
button.postDelayed(new Runnable() {
@Override
public void run() {
button.setEnabled(true);
}
}, 3000);
}
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