我想在图像上缩放图像 单击事件。 我怎样才能做到这一点。 这是我的完整代码
主.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_height="fill_parent" android:layout_width="fill_parent" >
<LinearLayout android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<Button android:text="Button1" android:id="@+id/button1" android:layout_height="wrap_content" android:layout_width="wrap_content" ></Button>
<Button android:text="Button2" android:id="@+id/button2" android:layout_height="wrap_content" android:layout_width="wrap_content" ></Button>
<Button android:text="Button3" android:id="@+id/button3" android:layout_height="wrap_content" android:layout_width="wrap_content" ></Button>
</LinearLayout>
<LinearLayout android:orientation="horizontal"
android:layout_height="290dp"
android:layout_width="wrap_content"
android:layout_gravity="center_horizontal">
<ImageView android:id="@+id/contentImage"
android:layout_height="250dp"
android:layout_width="200dp"
/>
</LinearLayout>
<LinearLayout android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView android:id="@+id/imageView1" android:src="@drawable/img1" android:layout_height="75dp" android:layout_width="75dp" ></ImageView>
<ImageView android:id="@+id/imageView2" android:src="@drawable/img2" android:layout_height="75dp" android:layout_width="75dp" ></ImageView>
<ImageView android:id="@+id/imageView3" android:src="@drawable/img3" android:layout_height="75dp" android:layout_width="75dp" ></ImageView>
</LinearLayout>
</LinearLayout>
Hear 是我的主要文件 将处理事件的 Image.java
package com.example;
import android.app.Activity;
import android.graphics.Matrix;
import android.graphics.PointF;
import android.os.Bundle;
import android.view.GestureDetector;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
public class Image extends Activity
{
public ImageView img1,img2,img3;
ImageView contentImage;
boolean click1=true;
boolean click2=true;
boolean click3=true;
boolean imageTouch=false;
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button btn1=(Button)findViewById(R.id.button1);
Button btn2=(Button)findViewById(R.id.button2);
Button btn3=(Button)findViewById(R.id.button3);
img1=(ImageView)findViewById(R.id.imageView1);
img2=(ImageView)findViewById(R.id.imageView2);
img3=(ImageView)findViewById(R.id.imageView3);
contentImage=(ImageView)findViewById(R.id.contentImage);
img1.setAlpha(100);
img2.setAlpha(100);
img3.setAlpha(100);
btn1.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View arg0)
{
if (click1)
{
img1.setAlpha(255);
img2.setAlpha(100);
img3.setAlpha(100);
click1=false;
}
else
{
img1.setAlpha(255);
img2.setAlpha(100);
img3.setAlpha(100);
click1=true;
}
contentImage.setImageDrawable(null);
}
});
btn2.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View arg0)
{
if (click2)
{
img1.setAlpha(100);
img2.setAlpha(255);
img3.setAlpha(100);
click2=false;
}
else
{
img1.setAlpha(80);
img2.setAlpha(255);
img3.setAlpha(80);
click2=true;
}
contentImage.setImageDrawable(null);
}
});
btn3.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View arg0)
{
if (click3)
{
img1.setAlpha(100);
img2.setAlpha(100);
img3.setAlpha(255);
click3=false;
}
else
{
img1.setAlpha(100);
img2.setAlpha(100);
img3.setAlpha(255);
click3=true;
}
contentImage.setImageDrawable(null);
}
});
img1.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
if (click1)
{
img1.setAlpha(255);
img2.setAlpha(100);
img3.setAlpha(100);
click1=false;
}
else
{
img1.setAlpha(255);
img2.setAlpha(100);
img3.setAlpha(100);
click2=true;
}
contentImage.setImageResource(R.drawable.img1);
}
});
img2.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
if (click2)
{
img1.setAlpha(100);
img2.setAlpha(255);
img3.setAlpha(100);
click2=false;
}
else
{
img1.setAlpha(80);
img2.setAlpha(255);
img3.setAlpha(80);
click2=true;
}
contentImage.setImageResource(R.drawable.img2);
}
});
img3.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
if (click3)
{
img1.setAlpha(100);
img2.setAlpha(100);
img3.setAlpha(255);
click3=false;
}
else
{
img1.setAlpha(100);
img2.setAlpha(100);
img3.setAlpha(255);
click3=true;
}
contentImage.setImageResource(R.drawable.img3);
}
});
contentImage.setOnClickListener(new OnClickListener()
{
public void onClick(View v)
{
try
{
Toast.makeText(Image.this,"hello",Toast.LENGTH_SHORT);
contentImage.setMinimumHeight(400);
contentImage.setMinimumWidth(700);
imageTouch=true;
}
catch(Exception e)
{
System.out.println("Exception Raise.......................");
}
}
});
}//onCreate Method over.....
}
最佳答案
您尝试过使用图库和 ImageView 吗？
<RelativeLayout>
<ImageView android:id="@+id/BigView" android:layout_width="XXdip" android:layout_height="XXdip" android:scaleType="fitCenter" />
<Gallery android:id="@+id/MyGallery" android:unselectedAlpha="0.5" android:layout_below="@id/BigView" android:layout_height="XXdip" />
</RelativeLayout>
您必须为画廊指定高度。然后添加一个 OnItemSelectedListener。
final int[] p = {R.drawable.img1, R.drawable.img2, R.drawable.img3, ...};
final ImageView i = (ImageView) findViewById(R.id.BigView);
Gallery g = (Gallery) findViewById(R.id.MyGallery);
g.setAdapter(...);
g.setOnItemSelectedListener(new OnItemSelectedListener() {
public void onItemSelected (AdapterView<?> parent, View view, int position, long id) {
i.setImageResource(p[position]);
// Maybe you can try
// i.setImageDrawable(((ImageView) view).getDrawable());
}
});
使用 scaleType fitCenter，您的图像将适合 ImageView 大小，保持纵横比。 所以直接设置大尺寸。
否则你可以在 fill_parent 中的 RelativeLayout 中添加一个 ImageView 两个布局大小并将可见性设置为消失，添加:
i.setOnClickListener(new OnClickLisyener() {
MyHiddenImageView.setImageResource(p[g.getSelectedItemPosition()]);
MyHiddenImageView.setVisibility(View.VISIBLE);
});
关于android - 在图像上缩放图像点击事件，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/5203702/