在android中,使用有界区域缩放文本,并在图像上徒手移动文本视图
我想用有界区域缩放文本视图,有界文本视图在图像视图上徒手移动 但是在这个问题上没有人帮忙 请帮助我如何解决这个问题,特别是有界文本视图与移动图像视图在android上 我的代码:在android中,使用有界区域缩放文本,并在图像上徒手移动文本视图,android,scale,move,Android,Scale,Move,我想用有界区域缩放文本视图,有界文本视图在图像视图上徒手移动 但是在这个问题上没有人帮忙 请帮助我如何解决这个问题,特别是有界文本视图与移动图像视图在android上 我的代码: public class MainActivity extends Activity { TextView scaleGesture; ScaleGestureDetector scaleGestureDetector; private View selected_item = null; private int
public class MainActivity extends Activity {
TextView scaleGesture;
ScaleGestureDetector scaleGestureDetector;
private View selected_item = null;
private int offset_x = 0;
private int offset_y = 0;
Bitmap bitmap;
LinearLayout view1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity);
scaleGesture = (TextView) findViewById(R.id.textView1);
scaleGesture.setText("this is some text how do you do?");
scaleGestureDetector = new ScaleGestureDetector(this,
new simpleOnScaleGestureListener());
ViewGroup vg = (ViewGroup) findViewById(R.id.vg);
vg.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
scaleGestureDetector.onTouchEvent(event);
if (selected_item != null) {
switch (event.getActionMasked()) {
case MotionEvent.ACTION_MOVE:
int x = (int) event.getX() - offset_x;
int y = (int) event.getY() - offset_y;
//
int w = getWindowManager().getDefaultDisplay()
.getWidth() - 100;
int h = getWindowManager().getDefaultDisplay()
.getHeight() - 100;
if (x > w)
x = w;
if (y > h)
y = h;
if (x < 0)
x = 0;
if (y < 0)
y = 0;
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(
new ViewGroup.MarginLayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT));
lp.setMargins(x, y, 0, 0);
selected_item.setLayoutParams(lp);
break;
default:
break;
}
}
return true;
}
});
// TextView img = (TextView)findViewById(R.id.textView1);
scaleGesture.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getActionMasked()) {
case MotionEvent.ACTION_DOWN:
offset_x = (int) event.getX();
offset_y = (int) event.getY();
selected_item = v;
break;
default:
break;
}
return false;
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
// @Override
// public boolean onTouchEvent(MotionEvent event) {
// // TODO Auto-generated method stub
// scaleGestureDetector.onTouchEvent(event);
// return true;
// }
public class simpleOnScaleGestureListener extends
SimpleOnScaleGestureListener {
@Override
public boolean onScale(ScaleGestureDetector detector) {
// TODO Auto-generated method stub
float size = scaleGesture.getTextSize();
Log.d("TextSizeStart", String.valueOf(size));
float factor = detector.getScaleFactor();
Log.d("Factor", String.valueOf(factor));
float product = size * factor;
Log.d("TextSize", String.valueOf(product));
scaleGesture.setTextSize(TypedValue.COMPLEX_UNIT_PX, product);
size = scaleGesture.getTextSize();
Log.d("TextSizeEnd", String.valueOf(size));
return true;
}
}
公共类MainActivity扩展活动{
文本视图缩放;
scalegestruedetector scalegestruedetector;
所选私有视图\u项=空;
私有int offset_x=0;
私有整数偏移量_y=0;
位图;
线性布局视图1;
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity);
scalegestrue=(TextView)findViewById(R.id.textView1);
setText(“这是一些文本,您好吗?”);
scalegestruedetector=新的scalegestruedetector(此,
新的SimplenScalegestureListener();
ViewGroup vg=(ViewGroup)findViewById(R.id.vg);
setOnTouchListener(新视图.OnTouchListener(){
@凌驾
公共布尔onTouch(视图v,运动事件){
scalegestruedetector.onTouchEvent(事件);
如果(所选项目!=null){
开关(event.getActionMasked()){
case MotionEvent.ACTION\u移动:
int x=(int)event.getX()-offset\u x;
int y=(int)event.getY()-offset_y;
//
int w=getWindowManager().getDefaultDisplay()
.getWidth()-100;
int h=getWindowManager().getDefaultDisplay()
.getHeight()-100;
如果(x>w)
x=w;
如果(y>h)
y=h;
if(x<0)
x=0;
if(y<0)
y=0;
LinearLayout.LayoutParams lp=新的LinearLayout.LayoutParams(
新建ViewGroup.MarginLayoutParams(
LinearLayout.LayoutParams.WRAP_内容,
LinearLayout.LayoutParams.WRAP_内容);
lp.setMargins(x,y,0,0);
所选项目。setLayoutParams(lp);
打破
违约:
打破
}
}
返回true;
}
});
//TextView img=(TextView)findViewById(R.id.textView1);
scaleGesture.setOnTouchListener(新视图.OnTouchListener(){
@凌驾
公共布尔onTouch(视图v,运动事件){
开关(event.getActionMasked()){
case MotionEvent.ACTION\u DOWN:
offset_x=(int)event.getX();
offset_y=(int)event.getY();
所选项目=v;
打破
违约:
打破
}
返回false;
}
});
}
@凌驾
公共布尔onCreateOptions菜单(菜单){
//为菜单充气;这会将项目添加到操作栏(如果存在)。
getMenuInflater().充气(R.menu.main,menu);
返回true;
}
//@覆盖
//公共布尔onTouchEvent(运动事件){
////TODO自动生成的方法存根
//scalegestruedetector.onTouchEvent(事件);
//返回true;
// }
公共类SimplenScalegestureListener扩展
SimplenScalegestureListener{
@凌驾
公共布尔标度(scalegestruedetector检测器){
//TODO自动生成的方法存根
float size=scaleGesture.getTextSize();
Log.d(“TextSizeStart”,String.valueOf(size));
浮点因子=检测器。getScaleFactor();
Log.d(“Factor”,String.valueOf(Factor));
浮积=尺寸*系数;
Log.d(“TextSize”,String.valueOf(product));
scaleGesture.setTextSize(TypedValue.COMPLEX\u UNIT\u PX,产品);
size=scaleGesture.getTextSize();
Log.d(“TextSizeEnd”,String.valueOf(size));
返回true;
}
}
布局:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:id="@+id/vg"
android:layout_width="500dp"
android:layout_height="500dp"
android:background="@drawable/bg" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Static ZoomControls"
android:textColor="#4169E1"
android:textSize="18dp" />
</LinearLayout>