我没有在OnTouchListers中获得按钮释放Toast

Question

问题是我没有获得按钮释放Toast。我在xml中有一个简单的视图，我在上面执行onTouch。

hidenBtn.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
int action = event.getActionMasked();
if (action == MotionEvent.ACTION_DOWN) {
firstTime=System.currentTimeMillis();
Toast.makeText(MainActivity.this, "Pressed", Toast.LENGTH_SHORT).show();

} else if (action == MotionEvent.ACTION_UP
|| action == MotionEvent.ACTION_CANCEL) {
Toast.makeText(MainActivity.this, "Released", Toast.LENGTH_SHORT).show();
secondTime=System.currentTimeMillis();
if(secondTime-firstTime>=5000){
//do your actions here,prev,curr are fields in a class
ShowDialog();
}
else{
firstTime=0;
secondTime=0;
}
}
// TODO Auto-generated method stub
return false;
}
});

Answer 1

这样更改OnTouchListener：

hidenBtn.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
int action = event.getActionMasked();
if (action == MotionEvent.ACTION_DOWN) {
firstTime=System.currentTimeMillis();
Toast.makeText(MainActivity.this, "Pressed", Toast.LENGTH_SHORT).show();
return true;
} else if (action == MotionEvent.ACTION_UP
|| action == MotionEvent.ACTION_CANCEL) {
Toast.makeText(MainActivity.this, "Released", Toast.LENGTH_SHORT).show();
secondTime=System.currentTimeMillis();
if(secondTime-firstTime>=5000){
//do your actions here,prev,curr are fields in a class
ShowDialog();
}
else{
firstTime=0;
secondTime=0;
}
}
// TODO Auto-generated method stub
return false;
}
});

您在ACTION_DOWN返回false，这意味着您没有使用触摸事件，因此不会触发同一事件的其他步骤。因此，您需要在ACTION_DOWN中返回true，以便拦截ACTION_UP。