我击中了一座砖瓦墙,我接着只是把图像放在点击上。

我想要做的是,对每一个形象来说,它开启了不同的活动。

比如,algebra图像打开了algebraactive,在点击露天活动等时,精度图像。

这可能很简单,但我目前并不十分清楚。

这里是主要活动。

import android.app.Activity; 
import android.content.Intent; 
import android.os.Bundle; 
import android.view.View; 
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener; 
import android.widget.GridView;  
public class MathsSubjectsActivity extends Activity {

    // Keep all Images in array
    public Integer[] mThumbIds = {
        R.drawable.algebraicon,R.drawable.coordsicon,
        R.drawable.decimalsicon,R.drawable.fractionsicon,
        R.drawable.algebraicon,R.drawable.algebraicon,
        R.drawable.powersicon,R.drawable.algebraicon,
        R.drawable.coordsicon,R.drawable.algebraicon,
    }; 

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.subjects);
        GridView gridView = (GridView) findViewById(R.id.grid_view); 
        // Instance of ImageAdapter Class 
        gridView.setAdapter(new ImageAdapter(this,mThumbIds)); 
 /**      * On Click event for Single Gridview Item      * */  
        gridView.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
                switch(position)
                {
                    case 0:
                        Intent login = new Intent(getApplicationContext(), MathsAlgebraActivity.class);
                        login.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                        startActivity(login);
                        break;
                    case 1:
                        Intent coords = new Intent(getApplicationContext(), MathsMultiActivity.class);
                        coords.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                        startActivity(coords);
                        break;
                    case 2:
                        Intent decim = new Intent(getApplicationContext(), MathsMultiActivity.class);
                        decim.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                        startActivity(decim);
                        break;
                    //and so on for other activities.
                    default:
                        break;
                }
            }
        }); 
    }
}

以下是处理图像的图像改编器。

import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;

private Context mContext;
private Integer[] resIds; 

//Constructor 
public ImageAdapter(Context c,Integer[] resIds){ 
    mContext = c;
    this.resIds=resIds;
}
@Override
public int getCount() {  
    return resIds.length;
}
@Override
public Object getItem(int position) {
    return resIds[position];
}
@Override
public long getItemId(int position) {
    return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
    ImageView imageView = new ImageView(mContext); 
    imageView.setImageResource(resIds[position]);  
    imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);   
    imageView.setLayoutParams(new GridView.LayoutParams(70, 70)); 
    return imageView;
}
}

案件0,但不1或2。

误差:

    Thread [<1> main] (Suspended (exception ActivityNotFoundException)) 
Instrumentation.checkStartActivityResult(int, Object) line: 1405    
Instrumentation.execStartActivity(Context, IBinder, IBinder, Activity, Intent, int) line: 1379  
MathsSubjectsActivity(Activity).startActivityForResult(Intent, int) line: 2827  
MathsSubjectsActivity(Activity).startActivity(Intent) line: 2933    
MathsSubjectsActivity$1.onItemClick(AdapterView, View, int, long) line: 51  
GridView(AdapterView).performItemClick(View, int, long) line: 284   
AbsListView$PerformClick.run() line: 1812   
ViewRoot(Handler).handleCallback(Message) line: 587 
ViewRoot(Handler).dispatchMessage(Message) line: 92 
Looper.loop() line: 130 
ActivityThread.main(String[]) line: 3683    
Method.invokeNative(Object, Object[], Class, Class[], Class, int, boolean) line:     not available [native method]  
Method.invoke(Object, Object...) line: 507  
ZygoteInit$MethodAndArgsCaller.run() line: 839  
ZygoteInit.main(String[]) line: 597 
NativeStart.main(String[]) line: not available [native method]