package com.brady.est;import android.annotation.SuppressLint;import android.graphics.Bitmap;import android.graphics.drawable.BitmapDrawable;import android.os.Bundle;import android.support.v7.app.ActionBarActivity;import android.view.Menu;import android.view.MenuItem;import android.view.MotionEvent;import android.view.View;import android.view.View.OnClickListener;import android.view.View.OnTouchListener;import android.widget.Button;import android.widget.ImageView;import android.widget.TextView;@SuppressLint({ "HandlerLeak", "ClickableViewAccessibility" })public class MainActivity extends ActionBarActivity {    private int[] images = new int[]{R.drawable.a,R.drawable.b,R.drawable.c,R.drawable.d};    int currentImage = 0;        @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);                final Button button = (Button)findViewById(R.id.button);        final ImageView imageView1 = (ImageView)findViewById(R.id.image1);        final ImageView imageView2 = (ImageView)findViewById(R.id.image2);        final TextView detail = (TextView)findViewById(R.id.detail);                        button.setOnClickListener(new OnClickListener() {                        @Override            public void onClick(View v) {                imageView1.setImageResource(images[currentImage%images.length]);                currentImage++;            }        });                imageView1.setOnTouchListener(new OnTouchListener() {                        @Override            public boolean onTouch(View v, MotionEvent event) {                                BitmapDrawable bitmapDrawable =  (BitmapDrawable)imageView1.getDrawable();                Bitmap bitmap = bitmapDrawable.getBitmap();                                //缩放比例                double scale = bitmap.getWidth()/imageView1.getWidth();                                int x = (int)(event.getX()*scale);                int y = (int)(event.getY()*scale);                if(x+150>bitmap.getWidth()){                    x = bitmap.getWidth()-150;                }                                if(y+100>bitmap.getHeight()){                    y = bitmap.getHeight()-150;                }                detail.setText(scale+"\n"+"x:"+x+"\n"+bitmap.getWidth()+"\n"+"y:"+y+"\n"+bitmap.getHeight());                imageView2.setImageBitmap(Bitmap.createBitmap(bitmap, x, y, 100, 100));                                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 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();        if (id == R.id.action_settings) {            return true;        }        return super.onOptionsItemSelected(item);    }}

<LinearLayout 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"      android:orientation="vertical"    android:id="@+id/root"    android:padding="5dip"    tools:context="com.brady.est.MainActivity" >         <ImageView         android:id="@+id/image1"        android:layout_width="200px"        android:layout_height="wrap_content"        android:src="@drawable/a"/>    <Button        android:id="@+id/button"        android:text="下一张"        android:layout_width="match_parent"        android:layout_height="wrap_content"        />    <ImageView         android:id="@+id/image2"        android:layout_width="120px"        android:layout_height="wrap_content"        />    <TextView         android:id="@+id/detail"        android:layout_width="match_parent"        android:layout_height="wrap_content"/> </LinearLayout>