我正在为项目用户工作，将图像在一个位置移动到屏幕上的另一个位置。我写了一个示例代码来移动图像，但问题是如果我移动一个图像，相邻的图像也开始移动..这是示例代码。任何一个想法。
Main.java
public class MainActivity extends Activity {
int windowwidth;
int windowheight;
ImageView ima1,ima2;
private android.widget.RelativeLayout.LayoutParams layoutParams ;
// private android.widget.RelativeLayout.LayoutParams layoutParams ;
//private android.widget.RelativeLayout.LayoutParams layoutParams ;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
windowwidth = getWindowManager().getDefaultDisplay().getWidth();
windowheight = getWindowManager().getDefaultDisplay().getHeight();
System.out.println("width" +windowwidth);
System.out.println("height" +windowheight);
ima1 = (ImageView)findViewById(R.id.imageview1);
ima1.setOnTouchListener(new View.OnTouchListener() {
public boolean onTouch(View v, MotionEvent event) {
layoutParams = (RelativeLayout.LayoutParams) ima1.getLayoutParams();
switch(event.getAction())
{
case MotionEvent.ACTION_DOWN:
break;
case MotionEvent.ACTION_MOVE:
int x_cord = (int) event.getRawX();
int y_cord = (int) event.getRawY();
System.out.println("value of x" +x_cord);
System.out.println("value of y" +y_cord);
if (x_cord > windowwidth) {
x_cord = windowwidth;
}
if (y_cord > windowheight) {
y_cord = windowheight;
}
layoutParams.leftMargin = x_cord-25;
layoutParams.topMargin = y_cord-25;
// layoutParams.rightMargin = x_cord-25;
// layoutParams.bottomMargin = y_cord-25;
ima1.setLayoutParams(layoutParams);
break;
default: break;
}
return true;
}
});
ima2 = (ImageView)findViewById(R.id.imageview2);
ima2.setOnTouchListener(new View.OnTouchListener() {
public boolean onTouch(View v, MotionEvent event) {
layoutParams = (RelativeLayout.LayoutParams) ima2.getLayoutParams();
switch(event.getActionMasked())
{
case MotionEvent.ACTION_DOWN:
break;
case MotionEvent.ACTION_MOVE:
int x_cord = (int) event.getRawX();
int y_cord = (int) event.getRawY();
System.out.println("value of x1" +x_cord);
System.out.println("value of y1" +y_cord);
if (x_cord > windowwidth) {
x_cord = windowwidth;
}
if (y_cord > windowheight) {
y_cord = windowheight;
}
layoutParams.leftMargin = x_cord - 25;
layoutParams.topMargin = y_cord - 75;
ima2.setLayoutParams(layoutParams);
break;
default: break;
}
return true;
}
});
}
}
main.xml中
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ImageView
android:layout_width="100dp"
android:layout_height="100dp"
android:id="@+id/imageview1"
android:src="@drawable/image1" />
<ImageView
android:layout_width="100sp"
android:layout_height="100sp"
android:id="@+id/imageview2"
android:src="@drawable/image2" />
</RelativeLayout>
答案 0 :(得分：9)
将以下代码写入您的活动文件。
windowwidth = getWindowManager().getDefaultDisplay().getWidth();
windowheight = getWindowManager().getDefaultDisplay().getHeight();
tv1 = (ImageView)findViewById(R.id.image);
tv1.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
layoutParams1 = (RelativeLayout.LayoutParams) tv1.getLayoutParams();
switch(event.getActionMasked())
{
case MotionEvent.ACTION_DOWN:
break;
case MotionEvent.ACTION_MOVE:
int x_cord = (int) event.getRawX();
int y_cord = (int) event.getRawY();
if (x_cord > windowwidth) {
x_cord = windowwidth;
}
if (y_cord > windowheight) {
y_cord = windowheight;
}
layoutParams1.leftMargin = x_cord - 25;
layoutParams1.topMargin = y_cord - 75;
tv1.setLayoutParams(layoutParams1);
break;
default:
break;
}
return true;
}
});
tv2 = (ImageView)findViewById(R.id.image1);
tv2.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
layoutParams2 = (RelativeLayout.LayoutParams) tv2.getLayoutParams();
switch(event.getActionMasked())
{
case MotionEvent.ACTION_DOWN:
break;
case MotionEvent.ACTION_MOVE:
int x_cord = (int) event.getRawX();
int y_cord = (int) event.getRawY();
if (x_cord > windowwidth) {
x_cord = windowwidth;
}
if (y_cord > windowheight) {
y_cord = windowheight;
}
layoutParams2.leftMargin = x_cord - 25;
layoutParams2.topMargin = y_cord - 75;
tv2.setLayoutParams(layoutParams2);
break;
default:
break;
}
return true;
}
});
XML文件： -
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ImageView android:layout_width="50sp" android:layout_height="50sp"
android:id="@+id/image" android:src="@drawable/image">
</ImageView>
<ImageView android:layout_y="30dip" android:layout_x="118dip"
android:layout_width="50sp" android:layout_height="50sp" android:id="@+id/image1"
android:src="@drawable/image1">
</ImageView>
</RelativeLayout>
答案 1 :(得分：2)
那是因为你把所有东西放在LinearLayout中，这意味着你不能把它们放在你想要的地方，它们总是一个接一个。您可以尝试使用RelativeLayout代替。如果这不够灵活，您应该查看Canvas。
答案 2 :(得分：0)
原因是：你的屏幕上传动作太懒了。
在正常情况下，即使手指没有在屏幕上移动，动作移动也会非常频繁地上传。但有些手机屏幕并不那么敏感。
您可以修改手机的阈值。它需要内核支持。
答案 3 :(得分：0)
我冒昧地交替使用代码来管理RelativeLayout和随机位置中的多个图像视图。此外，我添加了更好的获取窗口大小的方法，因为Display.getHeight()已被弃用。
if(Build.VERSION.SDK_INT >= 13){
android.graphics.Point p = new android.graphics.Point();
this.getWindowManager().getDefaultDisplay().getSize(p);
width = p.x;
height = p.y;
}
else{
Display display = getWindowManager().getDefaultDisplay();
width = display.getWidth();
height = display.getHeight();
}
RelativeLayout rel = new RelativeLayout(this);
rel.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
rel.setBackgroundResource(R.drawable.bg);
pic = new ImageView[10];
layoutParams1 = new LayoutParams[10];
for(int i = 0; i < 10; i++){
pic[i] = new ImageView(this);
pic[i].setImageResource(R.drawable.img);
pic[i].setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
pic[i].setAdjustViewBounds(true);
pic[i].setScaleType(ScaleType.FIT_XY);
pic[i].setMaxHeight(88);
pic[i].setMaxWidth(100);
pic[i].setMinimumHeight(88);
pic[i].setMinimumWidth(100);
pic[i].setTag(i);
int x = rand.nextInt(width);
while(x > width - 88){
x = rand.nextInt(width);
}
int y = rand.nextInt(height);
while(y > height - 100){
y = rand.nextInt(height);
}
layoutParams1[i] = (RelativeLayout.LayoutParams) pic[i].getLayoutParams();
layoutParams1[i].leftMargin = x;
layoutParams1[i].topMargin = y;
pic[i].setLayoutParams(layoutParams1[i]);
pic[i].setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
int index = Integer.valueOf(v.getTag().toString());
layoutParams1[index] = (RelativeLayout.LayoutParams) v.getLayoutParams();
switch(event.getActionMasked())
{
case MotionEvent.ACTION_DOWN:
break;
case MotionEvent.ACTION_MOVE:
int x_cord = (int) event.getRawX();
int y_cord = (int) event.getRawY();
if (x_cord > width) {
x_cord = width;
}
if (y_cord > height) {
y_cord = height;
}
layoutParams1[index].leftMargin = x_cord - 44;
layoutParams1[index].topMargin = y_cord - 50;
pic[index].setLayoutParams(layoutParams1[index]);
break;
default:
break;
}
return true;
}
});
rel.addView(pic[i]);
}
setContentView(rel);
答案 4 :(得分：0)
实际上，您可以通过编程方式声明图像来避免此问题。
int id = getResources().getIdentifier("image1", "drawable", getPackageName());
ImageView imageView1 = new ImageView(this);
LinearLayout.LayoutParams vp =
new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT);
imageView1.setLayoutParams(vp);
imageView1.setImageResource(id);
someLinearLayout.addView(imageView1);
int id = getResources().getIdentifier("image2", "drawable", getPackageName());
ImageView imageView2 = new ImageView(this);
LinearLayout.LayoutParams vp1 =
new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT);
imageView2.setLayoutParams(vp1);
imageView2.setImageResource(id);
someLinearLayout.addView(imageView2);
并将触摸事件添加到添加的图像视图