它很簡單的事情,我正在做,我已經做到了,但現在它沒有按預期運行。反正讓我簡單解釋一下我所試圖做的,什麼我收到::onTouch給怪異的觸摸點Android
方案:: 我有一個RelativeLayout
其中ImageView
放置,現在我設定touchlistener
這樣的:imageview.setOnTouchListener(this);
這讓我重寫onTouch(View v,MotionEvent event)
功能,我沒有... 並在Action_Move
我得到X和ÿ並將其添加到左側和頂部空間,這樣我運動我的形象。
奇怪的問題: 我ImageView
是移動,但具有非常明顯的抖動,就像如果我在正確的方向正在移動,ImageView
會去右側,但在它的途中它回來到左側,使它看起來像圖像是不穩定的,它的振動..類似的東西..我給x和y我在log
期間得到...希望這給你的想法。爲RelativeLayout的
ACTION_DOWN[#0(pid 0)=160,233] Going right..
ACTION_MOVE[#0(pid 0)=160,233] ////
ACTION_MOVE[#0(pid 0)=160,233] //
ACTION_MOVE[#0(pid 0)=174,231] //
ACTION_MOVE[#0(pid 0)=176,233] //
ACTION_MOVE[#0(pid 0)=196,232] //
ACTION_MOVE[#0(pid 0)=152,232] // suddenly i got 152 as location for x... image comes back
ACTION_MOVE[#0(pid 0)=167,232] // again started to go right
ACTION_MOVE[#0(pid 0)=180,233] // going right
ACTION_MOVE[#0(pid 0)=173,233] // again comes a little back
ACTION_MOVE[#0(pid 0)=187,232] // same thing goes till end..
ACTION_MOVE[#0(pid 0)=159,232]
ACTION_MOVE[#0(pid 0)=174,231]
ACTION_MOVE[#0(pid 0)=177,233]
ACTION_MOVE[#0(pid 0)=189,231]
ACTION_MOVE[#0(pid 0)=155,232]
ACTION_MOVE[#0(pid 0)=171,231]
ACTION_MOVE[#0(pid 0)=183,230]
ACTION_MOVE[#0(pid 0)=161,234]
ACTION_MOVE[#0(pid 0)=171,233]
ACTION_MOVE[#0(pid 0)=174,230]
ACTION_MOVE[#0(pid 0)=183,230]
ACTION_MOVE[#0(pid 0)=162,234]
ACTION_MOVE[#0(pid 0)=170,233]
ACTION_MOVE[#0(pid 0)=176,233]
ACTION_MOVE[#0(pid 0)=165,233]
ACTION_MOVE[#0(pid 0)=175,232]
ACTION_MOVE[#0(pid 0)=163,233]
ACTION_MOVE[#0(pid 0)=171,233]
ACTION_MOVE[#0(pid 0)=167,233]
ACTION_MOVE[#0(pid 0)=172,232]
ACTION_MOVE[#0(pid 0)=178,232]
ACTION_MOVE[#0(pid 0)=158,234]
ACTION_MOVE[#0(pid 0)=170,234]
ACTION_MOVE[#0(pid 0)=170,232]
ACTION_MOVE[#0(pid 0)=177,231]
ACTION_MOVE[#0(pid 0)=157,234]
ACTION_MOVE[#0(pid 0)=160,234]
ACTION_MOVE[#0(pid 0)=169,232]
ACTION_MOVE[#0(pid 0)=165,233]
ACTION_MOVE[#0(pid 0)=167,233]
ACTION_MOVE[#0(pid 0)=159,233]
ACTION_UP [#0(pid 0)=161,233]
XML代碼:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#99000000">
<ImageView
android:id="@+id/imageview"
android:layout_width="400dp"
android:layout_height="400dp"
android:layout_marginLeft="100dp"
android:layout_marginTop="100dp"
android:scaleType="matrix" />
</RelativeLayout>
所以,這是最大的,我可以解釋我的問題,還是如果你需要什麼,讓我知道。
更新:: 代碼在其容器即RelativeLayout
移動ImageView
:
case MotionEvent.ACTION_MOVE:
LayoutParams params = (LayoutParams) imageview.getLayoutParams();
params.leftMargin = params.leftMargin + x;
params.topMargin = params.topMargin + y;
imageview.setLayoutParams(params);
break;
」每次移動動作也會觸發一個稍微不同的OnTouchEvent,導致另一個移動動作 - 這種遞歸會給你一個「振動」效果。「請詳細解釋一下,鏈接/文檔在詳細寫出的地方會非常有幫助。 – Farhan 2012-07-25 09:47:35