如何调用系统gallery打开指定文件夹中的图片

Question

如何调用系统gallery打开指定文件夹中的图片？？？

Answer 1

1.File file=new File("/sdcard/IMG/1.jpg");                                
                Intent it = new Intent(Intent.ACTION_VIEW);
                Uri mUri = Uri.parse("file://"+file.getPath());
                it.setDataAndType(mUri, "image/*");
                startActivity(it);
2.  ComponentName componentName=new ComponentName("com.cooliris.media","com.cooliris.media.Gallery");   
                    Intent intent=new Intent();   
                    intent.setComponent(componentName);
                    File file=new File("/sdcard/IMG/1.jpg");
                    Uri mUri = Uri.parse("file://"+file.getPath());
                    intent.setData(mUri);
                    intent.setAction(Intent.ACTION_VIEW);   
                    startActivity(intent);   

Answer 2

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello" />
<Gallery
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello"
android:id="@+id/gallery_id"
android:layout_x="43px"   
android:layout_y="142px" />
</LinearLayout>

Answer 3

package com.yezijp.gallerytest;import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;public class GalleryTestActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        Gallery gallery = (Gallery) this.findViewById(R.id.gallery_id);
        gallery.setAdapter(new GalleryAdapter(this));
    }
    
    public class GalleryAdapter extends BaseAdapter {
    
     private Context context;
    
     private int[] myImages = {
     R.drawable.a1, 
     R.drawable.a2, 
     R.drawable.a3,
     R.drawable.a4};
    
     public GalleryAdapter (Context c) {
     this.context = c;
     } @Override
public int getCount() {
return myImages.length;
} @Override
public Object getItem(int position) {
return position;
} @Override
public long getItemId(int position) {
return position;
} @Override
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView = new ImageView(this.context);
imageView.setImageResource(this.myImages[position]);
imageView.setScaleType(ImageView.ScaleType.FIT_XY);
imageView.setLayoutParams(new Gallery.LayoutParams(120, 120));
return imageView;
}
    
    }
}

Answer 4

主要就是在布局文件里加上Gallery控件
之后关联控件并设置适配器
Gallery gallery = (Gallery) this.findViewById(R.id.gallery_id);
gallery.setAdapter(new GalleryAdapter(this));之后在自定义适配器GalleryAdapter中设置图片资源的数组
imageView.setImageResource(this.myImages[position]);

Answer 5

BitmapFactory.Options options=new Options();
options.inSampleSize=0;
Bitmap bitmap=BitmapFactory.decodeFile("图片文件路径",options);
ImageView imgView=new ImageView(context);
imgView.setScaleType(ImageView.ScaleType.FIT_XY);
//imgView.setLayoutParams(new Gallery.LayoutParams(100, Gallery.LayoutParams.FILL_PARENT));
imgView.setImageBitmap(bitmap);