Android按鈕不動？

Question

我正在按照在線教程進行按鈕更改位置（從左上角到右下角），同時增加尺寸。我正在使用transitionmanager進行此操作。

TransitionManager.beginDelayedTransition(mylayout); 

然後我想，如果我能做到從頂端左側還右下角的動畫（這不包括在本教程中，我只嘗試了這一點純粹的好奇心）。我創建稱爲

moveButtonBack(); 

X變量得到由每一個或moveButton moveButtonBack（）被調用時遞增的另一種方法，和moveButton被調用，如果x是如果x爲奇數偶數而moveButtonBack被調用。順便說一下，我在代碼中添加了很多註釋以跟蹤事情。要將按鈕大小更改回moveButtonBack，我使用變量H和W來顯示按鈕的第一個高度和寬度。

問題

爲了我的代碼似乎罰款，我不能找出問題所在。當我在手機上運行該按鈕時，該按鈕會變得瘋狂。文本在按鈕上快速變化，它以無組織的方式移動，或者當我觸摸時移動到中心，當我放開時移動到中心，或者它停留在中心並且看起來好像振動快速上下移動）。它具有恆定的高度300和寬度450，而不是縮小和放大。我不知道問題是什麼，如果我得到了幫助，我會很感激。我花了一個多小時在代碼中插入註釋，並試圖通過改變之類的東西聽衆的高度，以解決這一問題，等

package com.example.my.transitions; 

import android.nfc.Tag; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.view.*; 
import android.widget.*; 
import android.transition.*; 
import android.support.v7.app.*; 

public class MainActivity extends AppCompatActivity { 

ViewGroup myslayout; 
View mysButton; //Used in move and moveback 
int x = 0; 
double h; 
double w; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 

    myslayout = (ViewGroup) findViewById(R.id.myslayoutid); 

    myslayout.setOnTouchListener(
      new RelativeLayout.OnTouchListener() { 
       public boolean onTouch(View v, MotionEvent event) { 

         if (x%2 == 0) { 

          moveButton(); 
          return true; 

         } 
        else{ 

          moveButtonBack(); 
          return true; 
         } 

        return true; //touch listener as been handled 
       } 
      } 
    ); 
} 

public void moveButton() { 
    Button mysButton = (Button) findViewById(R.id.mysbuttonid); 

    h = mysButton.getHeight(); 
    w = mysButton.getWidth(); 


    TransitionManager.beginDelayedTransition(myslayout); 

    //////////////////////Change position of button//////////////////////////// 


    RelativeLayout.LayoutParams positionRules = new RelativeLayout.LayoutParams(

      RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT); 

    positionRules.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, RelativeLayout.ALIGN_PARENT_BOTTOM); 

    positionRules.addRule(RelativeLayout.ALIGN_PARENT_RIGHT, RelativeLayout.ALIGN_PARENT_RIGHT); 


    mysButton.setLayoutParams(positionRules); 

    /////////////////////////Change size of button//////////////////////////// 


    ViewGroup.LayoutParams sizerules = mysButton.getLayoutParams(); 
    sizerules.width = 450; 
    sizerules.height = 300; 

    mysButton.setLayoutParams(sizerules); 

    mysButton.setText("Height: " + sizerules.height + "Width: " + sizerules.width); 
    x++; //Make x odd, to be called as moveButtonBack next time 
} 

    public void moveButtonBack(){ 
     Button mysButton =(Button) findViewById(R.id.mysbuttonid); 
     TransitionManager.beginDelayedTransition(myslayout); 

     RelativeLayout.LayoutParams positionBackRules = new RelativeLayout.LayoutParams(
       RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT); 

     positionBackRules.addRule(RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.ALIGN_PARENT_TOP); 
     positionBackRules.addRule(RelativeLayout.ALIGN_PARENT_LEFT, RelativeLayout.ALIGN_PARENT_LEFT); //Move back to top left 

     mysButton.setLayoutParams(positionBackRules); 

     ViewGroup.LayoutParams sizebackrules = mysButton.getLayoutParams(); 
     sizebackrules.height = (int) h; 
     sizebackrules.width = (int) w; 
     //I am typcasting h and w into ints in case it is a double, since .width and .height only take ints. 

    mysButton.setLayoutParams(sizebackrules); 

     mysButton.setText("Height: " + sizebackrules.height + "Width: " + sizebackrules.width + "h " + h + "w" + w); 

     x++; //Make x even again 


    } 


@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    // Inflate the menu; this adds items to the action bar if it is present. 
    getMenuInflater().inflate(R.menu.menu_main, menu); 
    return true; 
} 

@Override 
public boolean onOptionsItemSelected(MenuItem item) { 
    // Handle action bar item clicks here. The action bar will 
    // automatically handle clicks on the Home/Up button, so long 
    // as you specify a parent activity in AndroidManifest.xml. 
    int id = item.getItemId(); 

    //noinspection SimplifiableIfStatement 
    if (id == R.id.action_settings) { 
     return true; 
    } 

    return super.onOptionsItemSelected(item); 
} 
} 

同樣，我會很感激的答案，因爲我一直在這個問題上現在幾個小時！

Answer 1

在你的onTouch方法檢查是否觸摸或觸摸。只爲這些事件之一寫下移動按鈕邏輯。

例如：在Android Documentation

if (event.getAction() == MotionEvent.ACTION_DOWN) { 
    // Code for Move button/Move button back 
} 

更多細節對於不改變問題的按鈕大小： 移動h和w到活動的onCreate方法可以幫助計算。