Android 实现获取手机里面的所有图片详解及实例

2024-02-24 02:25:06 440

publicclassMainActivityextendsActivity{ //查看图片按钮 privateButtonlook; privateButtonadd; //显示图片名称的list ListViewshow_list; ArrayListnames=null; ArrayListdescs=null; ArrayListfileNames=null; @Override protectedvoidonCreate(BundlesavedInstanceState){ super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); look=(Button)findViewById(R.id.look); add=(Button)findViewById(R.id.add); show_list=(ListView)findViewById(R.id.show_list); look.setOnClickListener(newView.OnClickListener(){ @Override publicvoidonClick(Viewview){ names=newArrayList(); descs=newArrayList(); fileNames=newArrayList(); Cursorcursor=getContentResolver().query( MediaStore.Images.Media.EXTERNAL_CONTENT_URI,null,null,null,null); while(cursor.moveToNext()){ //获取图片的名称 Stringname=cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media.DISPLAY_NAME)); //获取图片的生成日期 byte[]data=cursor.getBlob(cursor.getColumnIndex(MediaStore.Images.Media.DATA)); //获取图片的详细信息 Stringdesc=cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media.DESCRIPTION)); names.add(name); descs.add(desc); fileNames.add(newString(data,0,data.length-1)); } List>listItems=newArrayList<>(); for(inti=0;imap=newHashMap<>(); map.put("name",names.get(i)); map.put("desc",descs.get(i)); listItems.add(map); } //设置adapter SimpleAdapteradapter=newSimpleAdapter(MainActivity.this,listItems, R.layout.line,newString[]{"name","desc"},newint[]{R.id.name,R.id.desc}); show_list.setAdapter(adapter); } }); ///list的点击事件 show_list.setOnItemClickListener(newAdapterView.OnItemClickListener(){ @Override publicvoidonItemClick(AdapterViewadapterView,Viewview,inti,longl){ ViewviewDiag=getLayoutInflater().inflate(R.layout.view,null); ImageViewimage=(ImageView)viewDiag.findViewById(R.id.image); image.setImageBitmap(BitmapFactory.decodeFile((String)fileNames.get(i))); newAlertDialog.Builder(MainActivity.this).setView(viewDiag) .setPositiveButton("确定",null).show(); } }); } }

Android 实现获取手机里面的所有图片详解及实例

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