android-我想在列表视图中单击该项目时在另一个活动中打开图像

我编写了以下代码,但是我确定在onItemClick()方法中做错了什么
我的列表视图显示正确,当单击另一个活动时,我只想在新活动中显示图像
所以需要你们的帮助

主要活动

public class MainActivity extends ActionBarActivity {String[] days = { "Monday", "Tuesday", "Wednesday", "Thursday", "Friday",        "Saturday", "Sunday" };int[] images = { R.drawable.ic_launcher, R.drawable.ic_launcher,        R.drawable.ic_launcher, R.drawable.ic_launcher,        R.drawable.ic_launcher, R.drawable.ic_launcher,        R.drawable.ic_launcher };int[] images1 = { R.drawable.image01, R.drawable.image02,        R.drawable.image03, R.drawable.image04, R.drawable.image05,        R.drawable.image06, R.drawable.image07 };ListView lv;@Overrideprotected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    lv = (ListView) findViewById(R.id.listView1);    ArjAdapter adapter = new ArjAdapter(getBaseContext(), days, images);    lv.setAdapter(adapter);    lv.setOnItemClickListener(new OnItemClickListener() {        @Override        public void onItemClick(AdapterView<?> parent, View view,                int position, long id) {            // TODO Auto-generated method stub            File imgfile = new File("");            if (imgfile.exists()) {                String myBitmap = imgfile.getAbsolutePath();                Intent intent = new Intent(MainActivity.this,                        ImageActivity.class);                intent.setType("image/*");                intent.putExtra("img", "images1");                startActivity(intent);            }        }    });

在上述方法中,我不确定文件对象内部应包含什么内容,我在某处看到了该方法,但不确定文件内部包含什么内容,因此请留空以咨询大家

ImageActivity,我要在其中显示图像

public class ImageActivity extends Activity {ImageView iv;@Overrideprotected void onCreate(Bundle savedInstanceState) {    // TODO Auto-generated method stub    super.onCreate(savedInstanceState);    setContentView(R.layout.images);    Bitmap myBitmap = BitmapFactory.decodeFile(getIntent().getStringExtra(            "img"));    ImageView iv = (ImageView) findViewById(R.id.imageView2);    iv.setImageBitmap(myBitmap);}

任何建议都欢迎

解决方法:

你应该这样写onListItemClick()

lv.setOnItemClickListener(new OnItemClickListener() {            @Override            public void onItemClick(AdapterView<?> parent, View view,                                    int position, long id) {                Intent intent = new Intent(MainActivity.this,                        ImageActivity.class);                intent.putExtra("img", images1[position]);                startActivity(intent);            }        });

ImageActivity.java

public class ImageActivity extends Activity {    ImageView iv;    @Override    protected void onCreate(Bundle savedInstanceState) {        // TODO Auto-generated method stub        super.onCreate(savedInstanceState);        setContentView(R.layout.images);        ImageView iv = (ImageView) findViewById(R.id.imageView2);        iv.setImageResource(getIntent().getIntExtra("img", 0));    }}

输出：

来源：https://www.icode9.com/content-4-506501.html