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我是新來處理浮動動作按鈕，並試圖獲得今天的一些基本工作。目前我堅持讓onClick功能正常工作。我從谷歌FAB基本示例中抽取了大部分代碼，並在其中有一個onChecked方法，該方法會向記錄器發送一個字符串以顯示您點擊了它。OnClick for Floating Action Button
@Override
public void onCheckedChanged(FloatingActionButton fabView, boolean isChecked) {
// When a FAB is toggled, log the action.
switch (fabView.getId()){
case R.id.fab_1:
break;
default:
break;
}
}
我想我可以替換那裏的功能，但沒有任何影響。所以我試圖創建onClickListener就像你用任何其他按鈕，但也沒有影響。我不確定如何繼續，因爲這兩個選項都不起作用。我的目標是在浮動動作按鈕被點擊時產生一個對話框，但現在我只是想使用佔位符警告對話框。
這是FloatingActionButtonFragment類：
public class FloatingActionButtonFragment extends Fragment implements FloatingActionButton.OnCheckedChangeListener {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View rootView = inflater.inflate(R.layout.fab_layout, container, false);
// Make this {@link Fragment} listen for changes in both FABs.
FloatingActionButton fab1 = (FloatingActionButton) rootView.findViewById(R.id.fab_1);
fab1.setOnCheckedChangeListener(this);
fab1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setMessage("Are you sure?")
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
}
})
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// User cancelled the dialog
}
});
// Create the AlertDialog object and return it
AlertDialog dialog = builder.create();
dialog.show();
}
});
return rootView;
}
@Override
public void onCheckedChanged(FloatingActionButton fabView, boolean isChecked) {
// When a FAB is toggled, log the action.
switch (fabView.getId()){
case R.id.fab_1:
break;
default:
break;
}
}
}
這裏是FloatingActionButton類：
public class FloatingActionButton extends FrameLayout implements Checkable {
/**
* Interface definition for a callback to be invoked when the checked state
* of a compound button changes.
*/
public static interface OnCheckedChangeListener {
/**
* Called when the checked state of a FAB has changed.
*
* @param fabView The FAB view whose state has changed.
* @param isChecked The new checked state of buttonView.
*/
void onCheckedChanged(FloatingActionButton fabView, boolean isChecked);
}
/**
* An array of states.
*/
private static final int[] CHECKED_STATE_SET = {
android.R.attr.state_checked
};
private static final String TAG = "FloatingActionButton";
// A boolean that tells if the FAB is checked or not.
private boolean mChecked;
// A listener to communicate that the FAB has changed it's state
private OnCheckedChangeListener mOnCheckedChangeListener;
public FloatingActionButton(Context context) {
this(context, null, 0, 0);
}
public FloatingActionButton(Context context, AttributeSet attrs) {
this(context, attrs, 0, 0);
}
public FloatingActionButton(Context context, AttributeSet attrs, int defStyleAttr) {
this(context, attrs, defStyleAttr, 0);
}
public FloatingActionButton(Context context, AttributeSet attrs, int defStyleAttr,
int defStyleRes) {
super(context, attrs, defStyleAttr);
setClickable(true);
// Set the outline provider for this view. The provider is given the outline which it can
// then modify as needed. In this case we set the outline to be an oval fitting the height
// and width.
setOutlineProvider(new ViewOutlineProvider() {
@Override
public void getOutline(View view, Outline outline) {
outline.setOval(0, 0, getWidth(), getHeight());
}
});
// Finally, enable clipping to the outline, using the provider we set above
setClipToOutline(true);
}
/**
* Sets the checked/unchecked state of the FAB.
* @param checked
*/
public void setChecked(boolean checked) {
// If trying to set the current state, ignore.
if (checked == mChecked) {
return;
}
mChecked = checked;
// Now refresh the drawable state (so the icon changes)
refreshDrawableState();
if (mOnCheckedChangeListener != null) {
mOnCheckedChangeListener.onCheckedChanged(this, checked);
}
}
/**
* Register a callback to be invoked when the checked state of this button
* changes.
*
* @param listener the callback to call on checked state change
*/
public void setOnCheckedChangeListener(OnCheckedChangeListener listener) {
mOnCheckedChangeListener = listener;
}
@Override
public boolean isChecked() {
return mChecked;
}
@Override
public void toggle() {
setChecked(!mChecked);
}
/**
* Override performClick() so that we can toggle the checked state when the view is clicked
*/
@Override
public boolean performClick() {
toggle();
return super.performClick();
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
// As we have changed size, we should invalidate the outline so that is the the
// correct size
invalidateOutline();
}
@Override
protected int[] onCreateDrawableState(int extraSpace) {
final int[] drawableState = super.onCreateDrawableState(extraSpace + 1);
if (isChecked()) {
mergeDrawableStates(drawableState, CHECKED_STATE_SET);
}
return drawableState;
}
}
有在這一點上是沒有太大的任一類，他們大多是皮的，但我只是想在繼續之前獲得這個基本的功能，並且作爲我的小白，我不知道爲什麼這不起作用。
您應該使用支持設計庫中的FAB – tyczj
注意將我鏈接到一些有用的東西？這是第一次與FAB合作，所以我只是從Google的一個示例中獲取代碼。那不是來自支持設計庫嗎？ – erp
http://developer.android.com/reference/android/support/design/widget/FloatingActionButton.html – tyczj