android-custom-view

问题 I have a situation where I want to debug calls to TextView.onDraw() so I subclassed it like this: public class MyTextView extends AppCompatTextView { View parent; public MyTextView(Context context) { super(context); } public MyTextView(Context context, AttributeSet attrs) { super(context, attrs); } public MyTextView(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); } public void storeParent(View parent) { this.parent = parent; } @Override protected

问题 I developed an own class, which extends EditText. But my custom view has an other look as the normal view. public class DateEditText extends EditText { [...] public DateEditText(Context context, AttributeSet attrs) { super(context, attrs); init(); } public DateEditText(Context context) { super(context); init(); } public DateEditText(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); init(); } private void init() { setInputType(InputType.TYPE_CLASS

问题 How can I make this? It looks nice and I'd like to use something like this. The lines at the top should correspond to the end of the title 回答1: Actually, these types of view are mostly done with custom views. This tutorial is useful for custom views. But you can cheat a little bit, create backgound.xml inside the drawable folder, and paste the code: <?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"> <stroke

问题 I've created a custom ListView using my own version of ArrayAdapter. My problem is that it is not responding to any onItemClickListeners. Here are my code snippets: final ArrayAdapter<Agency> aa=new myCustomAdapter(); lv.setAdapter(aa); lv.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View myView, int pos, long id) { TextView clickedTV=(TextView)myView.findViewById(R.id.rowtext1); Toast.makeText(getBaseContext(),

问题 How can i drag a custom view inside the SurfaceView. Touch events are not dispatched to child custom view from SurfaceView or child view's onTouchEvent is not called. 回答1: Try this code public class MoveViewTouchListener implements View.OnTouchListener { private GestureDetector mGestureDetector; private View mView; public MoveViewTouchListener(View view) { mGestureDetector = new GestureDetector(view.getContext(), mGestureListener); mView = view; } @Override public boolean onTouch(View v,

问题 How can i drag a custom view inside the SurfaceView. Touch events are not dispatched to child custom view from SurfaceView or child view's onTouchEvent is not called. 回答1: Try this code public class MoveViewTouchListener implements View.OnTouchListener { private GestureDetector mGestureDetector; private View mView; public MoveViewTouchListener(View view) { mGestureDetector = new GestureDetector(view.getContext(), mGestureListener); mView = view; } @Override public boolean onTouch(View v,

问题 I want to build a fixed mini nav drawer in android. will will always be visible an not extendable, with icons only. Something like https://github.com/mikepenz/MaterialDrawer Mini Drawer. I try used his library, but I can't figured out how to make it fixed. here is my code: private Drawer result = null; private MiniDrawer miniResult = null; result = new DrawerBuilder() .withActivity(this) .withToolbar(toolbar) .withTranslucentStatusBar(false) .addDrawerItems( new PrimaryDrawerItem().withName(

问题 I have a custom view, assume it looks like this: I would like for my custom view to respond to the onClicks, however the catch is that I would like it to respond to the clicks ONLY on the red portion/circle. Not the whole view. Is it possible to make to make the text above and the grey portion not clickable? Thank you. 回答1: In a custom view, you handle clicks by overriding the onTouchEvent method of android's View class. First check that the location the user has clicked is within the circle.

问题 I used a customView class for create a diamond shape button. In onDraw method of this class: @Override protected void onDraw(Canvas canvas) { mPath.moveTo(mWidth/2 , 0); mPath.lineTo(mWidth , mHigh/2); mPath.lineTo(mWidth /2 , mHigh); mPath.lineTo(0 , mHigh/2); mPath.lineTo( mWidth/2 ,0); canvas.drawPath(mPath ,mBorderPaint); super.onDraw(canvas); } And borderPaint defined like this: mBorderPaint = new Paint(); mBorderPaint.setColor(mBorderColor); mBorderPaint.setStyle(Paint.Style.FILL_AND

问题 I have a custom View and I'm overriding onTouchEvent(MotionEvent) . I've implemented pinch-zoom in this view as described in the article Making Sense of Multitouch. The issue I'm having is that this view is ultimately used in a Gallery which needs touch events for scrolling. I've added logic to detect when my view has fully scrolled to the right/left and return false, but I think the Gallery needs the full MotionEvent motion in order to scroll. Here's where I return false: case MotionEvent