我想移动TextView
上的ImageView
,但即使使用Google Developer页面中的代码,我也无法移动它。 如何在Android的屏幕的任意位置拖放TextView
?将TextView拖放到任意位置
0
A
回答
0
XML文件:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/linear"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="@+id/tv1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="10dp"
android:text="Test1" />
<TextView
android:id="@+id/tv2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="10dp"
android:text="Test2" />
</RelativeLayout>
的Java文件
public class TestActivity extends Activity {
int pressed_x,pressed_y,pressed_x1,pressed_y1;
TextView tv1,tv2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_test);
tv1 = (TextView) findViewById(R.id.tv1);
tv2 = (TextView) findViewById(R.id.tv2);
tv1.setOnTouchListener(mOnTouchListenerTv1);
tv2.setOnTouchListener(mOnTouchListenerTv2);
}
public final View.OnTouchListener mOnTouchListenerTv1 = new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
RelativeLayout.LayoutParams relativeLayoutParams = (RelativeLayout.LayoutParams) tv1.getLayoutParams();
switch (event.getActionMasked()) {
case MotionEvent.ACTION_DOWN:
Log.d("TAG","@@@@ TV1 ACTION_UP");
// Where the user started the drag
pressed_x = (int) event.getRawX();
pressed_y = (int) event.getRawY();
break;
case MotionEvent.ACTION_MOVE:
Log.d("TAG","@@@@ TV1 ACTION_UP");
// Where the user's finger is during the drag
final int x = (int) event.getRawX();
final int y = (int) event.getRawY();
// Calculate change in x and change in y
int dx = x - pressed_x;
int dy = y - pressed_y;
// Update the margins
relativeLayoutParams.leftMargin += dx;
relativeLayoutParams.topMargin += dy;
tv1.setLayoutParams(relativeLayoutParams);
// Save where the user's finger was for the next ACTION_MOVE
pressed_x = x;
pressed_y = y;
break;
case MotionEvent.ACTION_UP:
Log.d("TAG","@@@@ TV1 ACTION_UP");
break;
}
return true;
}
};
public final View.OnTouchListener mOnTouchListenerTv2 = new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
RelativeLayout.LayoutParams relativeLayoutParams1 = (RelativeLayout.LayoutParams) tv2.getLayoutParams();
switch (event.getActionMasked()) {
case MotionEvent.ACTION_DOWN:
Log.d("TAG","@@@@ TV2 ACTION_DOWN");
// Where the user started the drag
pressed_x1 = (int) event.getRawX();
pressed_y1 = (int) event.getRawY();
break;
case MotionEvent.ACTION_MOVE:
Log.d("TAG","@@@@ TV2 ACTION_MOVE");
// Where the user's finger is during the drag
final int x = (int) event.getRawX();
final int y = (int) event.getRawY();
// Calculate change in x and change in y
int dx = x - pressed_x1;
int dy = y - pressed_y1;
// Update the margins
relativeLayoutParams1.leftMargin += dx;
relativeLayoutParams1.topMargin += dy;
tv2.setLayoutParams(relativeLayoutParams1);
// Save where the user's finger was for the next ACTION_MOVE
pressed_x1 = x;
pressed_y1 = y;
break;
case MotionEvent.ACTION_UP:
Log.d("TAG","@@@@ TV2 ACTION_UP");
break;
}
return true;
}
};
}
+0
当我使用单个TextView但它不工作时它的工作,当我使用多个TextView时(当我移动后触摸tv1或触摸tv2,每次tv1移动事件,尽管我尝试移动tv2)。 –
+0
添加更新的代码 – user2025187
+0
我在下面添加了我的代码 –
0
XML代码:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/linear"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="@+id/tv1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="10dp"
android:text="Test1" />
<TextView
android:id="@+id/tv2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="10dp"
android:layout_centerInParent="true"
android:text="Test2" />
</RelativeLayout>
Java代码:
public class MainActivity extends Activity {
int pressed_x,pressed_y,pressed_x1,pressed_y1;
TextView tv1,tv2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tv1 = (TextView) findViewById(R.id.tv1);
tv2 = (TextView) findViewById(R.id.tv2);
tv1.setOnTouchListener(mOnTouchListenerTv1);
tv2.setOnTouchListener(mOnTouchListenerTv2);
}
public final View.OnTouchListener mOnTouchListenerTv1 = new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
RelativeLayout.LayoutParams relativeLayoutParams = (RelativeLayout.LayoutParams) tv1.getLayoutParams();
switch (event.getActionMasked()) {
case MotionEvent.ACTION_DOWN:
Log.d("TAG","@@@@ TV1 ACTION_UP");
// Where the user started the drag
pressed_x = (int) event.getRawX();
pressed_y = (int) event.getRawY();
break;
case MotionEvent.ACTION_MOVE:
Log.d("TAG","@@@@ TV1 ACTION_UP");
// Where the user's finger is during the drag
final int x = (int) event.getRawX();
final int y = (int) event.getRawY();
// Calculate change in x and change in y
int dx = x - pressed_x;
int dy = y - pressed_y;
// Update the margins
relativeLayoutParams.leftMargin += dx;
relativeLayoutParams.topMargin += dy;
tv1.setLayoutParams(relativeLayoutParams);
// Save where the user's finger was for the next ACTION_MOVE
pressed_x = x;
pressed_y = y;
break;
case MotionEvent.ACTION_UP:
Log.d("TAG","@@@@ TV1 ACTION_UP");
break;
}
return true;
}
};
public final View.OnTouchListener mOnTouchListenerTv2 = new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
RelativeLayout.LayoutParams relativeLayoutParams1 = (RelativeLayout.LayoutParams) tv2.getLayoutParams();
switch (event.getActionMasked()) {
case MotionEvent.ACTION_DOWN:
Log.d("TAG","@@@@ TV2 ACTION_DOWN");
// Where the user started the drag
pressed_x1 = (int) event.getRawX();
pressed_y1 = (int) event.getRawY();
break;
case MotionEvent.ACTION_MOVE:
Log.d("TAG","@@@@ TV2 ACTION_MOVE");
// Where the user's finger is during the drag
final int x = (int) event.getRawX();
final int y = (int) event.getRawY();
// Calculate change in x and change in y
int dx = x - pressed_x1;
int dy = y - pressed_y1;
// Update the margins
relativeLayoutParams1.leftMargin += dx;
relativeLayoutParams1.topMargin += dy;
tv2.setLayoutParams(relativeLayoutParams1);
// Save where the user's finger was for the next ACTION_MOVE
pressed_x1 = x;
pressed_y1 = y;
break;
case MotionEvent.ACTION_UP:
Log.d("TAG","@@@@ TV2 ACTION_UP");
break;
}
return true;
}
};
}
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添加您已经尝试过的代码 - 如果在尝试移动TextView时出现错误,请在您的问题中包括这些以使社区能够提供帮助;查看[快速浏览StackOverflow](http://stackoverflow.com/help)以获取有关询问优秀问题的提示等。 – ishmaelMakitla
Google Developer Page上的代码正常工作...我们提供帮助的唯一方法是看到你的代码,并解释你在做什么不同的工作 – Entreco
没有它的不工作..它包含错误 –