Question

我正在尝试制作一个相机应用程序，该照片应用程序拍摄照片并允许用户将其设置为壁纸，这是唯一的错误就是

04-23 10:39:11.950 571-571/? E/Vold: Error reading configuration (No such file or directory)... continuing anyways

这是我的java代码

public class MainActivity extends AppCompatActivity implements   View.OnClickListener{

Button b1,b2;
ImageView iv;
Intent i;
final static int camdata=0;
Bitmap bmp;
Context context;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    initialize();
    InputStream is =context.getResources().openRawResource(+R.drawable.wale);
    bmp= BitmapFactory.decodeStream(is);
}
private void initialize(){
 iv =(ImageView)findViewById(R.id.imageView);
    b1=(Button)findViewById(R.id.button);
    b2=(Button)findViewById(R.id.button2);
    b1.setOnClickListener(this);
    b2.setOnClickListener(this);
}
@Override
public void onClick(View v) {
    switch (v.getId()){
        case R.id.button:
            WallpaperManager myWallpaper =WallpaperManager.getInstance(this);
            try{
                myWallpaper.setBitmap(bmp);
            } catch (IOException e) {
                e.printStackTrace();
            }
            break;
        case R.id.button2:
            i=new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            startActivityForResult(i,camdata);
            break;
    }
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if(requestCode==RESULT_OK){
        Bundle extras =data.getExtras();
        bmp=(Bitmap)extras.get("data");
        iv.setImageBitmap(bmp);
    }
}

}

我的xml代码

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="com.union.test5.MainActivity"
tools:showIn="@layout/activity_main">

<Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Set Wallpaper"
    android:id="@+id/button"
    android:layout_alignParentBottom="true"
    android:layout_centerHorizontal="true" />

<Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Camera"
    android:id="@+id/button2"
    android:layout_above="@+id/button"
    android:layout_centerHorizontal="true"
    android:layout_marginBottom="73dp" />

<ImageView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/imageView"

    android:layout_above="@+id/button2"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true" />

I have set the image in my drawable file wale .

我无法知道这里缺少什么目录，程序正在正确编译并且没有给出任何错误，但是它给出了运行时错误。它需要进行哪些更改设置Inputstream命令或

时出错

InputStream is =context.getResources().openRawResource(+ R.drawable.wale);
  bmp= BitmapFactory.decodeStream(is);

这是主要错误。

Answer 1

从中移除上下文 InputStream is = context.getResources（）。openRawResource（+ R.drawable.wale）; bmp = BitmapFactory.decodeStream（是）;

如何设置相机应用程序

1 个答案: