图像是不能在ImageView的动态地从SD卡展示 [英] Image is does not show in ImageView dynamically from sdcard

问题描述

在我的$ C C图像$不在ImageView的从SD卡我已经检查了权限的manifest.xml打开。 同样，如果我尝试使用静态的名字，那么它将被ImageView的，但不能动态显示，将其打开。

主要活动

 私人OnClickListener参考OnCapture =新OnClickListener（）{
    @覆盖
    公共无效的onClick（视图v）{
        字符串时间= mCamUtils.clickPicture（）;
        nextActivity =新的意图（MainActivity.this，EffectActivity.class）;
        nextActivity.putExtra（ImageName，时间）;
        startActivity（nextActivity）;
        完（）;
    }
};
 

EffectActivity

 公共类EffectActivity延伸活动{

意图getActivity = NULL;
ImageView的形象= NULL;
@覆盖
公共无效的onCreate（包savedInstanceState）{
    super.onCreate（savedInstanceState）;
    的setContentView（R.layout.effectactivity）;

    getActivity = getIntent（）;
    字符串名称= getActivity.getStringExtra（ImageName）;

    字符串路径= Environment.getExternalStorageDirectory（）+/ GalaxyPhoto / GX_+姓名+.JPG;

    Toast.makeText（getApplicationContext（），路径，Toast.LENGTH_LONG）.show（）;
    图像=（ImageView的）findViewById（R.id.imageView1）;
    文件f =新的文件（路径）;
    byte []的B =新的字节[（INT）f.length（）];
    如果（f.exists（））
    {
        尝试
        {
            如果（f.exists（））
            {
                的FileInputStream FF =新的FileInputStream（F）;
                ff.read（B）;
                位图G = BitmapFactory.de codeFILE（路径）;
                image.setImageBitmap（G）;
                ff.close（）;
            }
            其他
            {
                Toast.makeText（getApplicationContext（），ELSE，Toast.LENGTH_LONG）.show（）;
            }
        }
        赶上（例外五）
        {

        }
    }
}
 

}

我试图打开我保存在此活动之前的形象和我赶上形象的名字在这里，但不显示图像。 感谢您andvance ..

解决方案

 字符串路径= Environment.getExternalStorageDirectory（）+/ GalaxyPhoto / GX_+姓名+.JPG;
 

在这一行尝试改变JPG到JPG。我想你的文件扩展名可能是小写字母，它可能会说f.exists假的。 希望这将有助于。

In My Code The image is not open in ImageView from sdcard i already checked the permissions in 'manifest.xml'. Same if i try to open it using static name then it will showed by ImageView but not dynamically.

Main Activity

private OnClickListener OnCapture =  new OnClickListener() {        
    @Override
    public void onClick(View v) {
        String time = mCamUtils.clickPicture();
        nextActivity = new Intent(MainActivity.this,EffectActivity.class);
        nextActivity.putExtra("ImageName", time);
        startActivity(nextActivity);
        finish();
    }
};

EffectActivity

    public class EffectActivity extends Activity {

Intent getActivity = null;
ImageView image = null;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.effectactivity);

    getActivity = getIntent();
    String name = getActivity.getStringExtra("ImageName");

    String path = Environment.getExternalStorageDirectory()+"/GalaxyPhoto/GX_" +name+ ".JPG";

    Toast.makeText(getApplicationContext(), path, Toast.LENGTH_LONG).show();
    image = (ImageView) findViewById(R.id.imageView1);
    File f = new File(path);
    byte[] b = new byte[(int)f.length()];
    if(f.exists())
    {
        try
        {
            if(f.exists())
            {
                FileInputStream ff = new FileInputStream(f);
                ff.read(b);
                Bitmap g = BitmapFactory.decodeFile(path);
                image.setImageBitmap(g);
                ff.close();
            }
            else
            {
                Toast.makeText(getApplicationContext(), "ELSE", Toast.LENGTH_LONG).show();
            }
        }
        catch(Exception e)
        {

        }
    }
}

}

I am trying to open image which i saved in before this activity and i catch the name of image here but that does not show the image. THANK YOU in andvance..

解决方案

String path = Environment.getExternalStorageDirectory()+"/GalaxyPhoto/GX_" +name+ ".JPG";

In this line try changing "JPG" into "jpg".i think your file extension might be in lowercase letter and it might say f.exists false. Hope it will help.

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