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This article focuses on "how to achieve button drag and drop restore function in Android", interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Next let the editor to take you to learn "how to achieve button drag and drop restore function in Android"!

The specific code is as follows:

Public class MainActivity extends AppCompatActivity {private ImageButton ibOk; private int lastX; private int lastY; private int startLeft; private int startRight; private int startTop; private int startBottom; @ Override protected void onCreate (Bundle savedInstanceState) {super.onCreate (savedInstanceState); setContentView (R.layout.activity_main); ibOk = (ImageButton) findViewById (R.id.ib_ok) IbOk.setOnTouchListener (new View.OnTouchListener () {@ Override public boolean onTouch (View v, MotionEvent event) {int action = event.getAction (); / / get the phone's touch coordinates int x = (int) event.getX (); int y = (int) event.getY () Switch (action) {case MotionEvent.ACTION_DOWN:// press to get the initial position of the ball startLeft = ibOk.getLeft (); startRight = ibOk.getRight (); startTop = ibOk.getTop (); startBottom = ibOk.getBottom (); lastX = x; lastY = y; break Case MotionEvent.ACTION_MOVE:// moves, the ball follows the movement of the finger int offsetX = x-lastX; int offsetY = y-lastY; ibOk.layout (ibOk.getLeft () + offsetX, ibOk.getTop () + offsetY, ibOk.getRight () + offsetX, ibOk.getBottom () + offsetY); break Case MotionEvent.ACTION_UP:// when the finger is raised, return to the original position of the ball ibOk.layout (startLeft, startTop, startRight, startBottom); break;} return true;}}) What is Android? Android is a free and open source operating system based on the Linux kernel, mainly used in mobile devices such as smartphones and tablets, led and developed by Google and the Open Mobile Alliance.

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