Android 图片缩放，手势，事件

我们这里使用第三方的jar包，来完成。

下载地址

xml

"http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context="${packageName}.${activityClass}" >    .co.senab.photoview.PhotoView        android:id="@+id/image"        android:layout_width="fill_parent"        android:layout_height="fill_parent" >    .co.senab.photoview.PhotoView>

Java

package com.example.photoviewdemo;import java.io.File;import uk.co.senab.photoview.PhotoView;import uk.co.senab.photoview.PhotoViewAttacher.OnPhotoTapListener;import android.app.Activity;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.os.Bundle;import android.os.Environment;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.widget.Toast;public class MainActivity extends Activity {    private PhotoView photoView;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        photoView = (PhotoView) findViewById(R.id.image);        String filePath = Environment.getExternalStorageDirectory() + "/1.jpg";        File file = new File(filePath);        if (file.exists()) {            Bitmap bitmap = BitmapFactory.decodeFile(filePath);            photoView.setImageBitmap(bitmap);        }        photoView.setOnPhotoTapListener(new OnPhotoTapListener() {            @Override            public void onPhotoTap(View arg0, float arg1, float arg2) {            }        });    }}可实现图片的双击放大，单机缩小，手势放大缩小等。

更多相关文章

随机推荐