我正在尝试创建一个启动器,其中我添加了GridView
。这将获取所有已安装的应用程序并将它们排列在网格中。
问题是当我点击那些网格项时没有任何反应,我希望它打开应用程序。
有可能吗?这是我的代码:
Apps.java:
public class Apps extends Activity {
SharedPreferences colors_app;
GridView mGrid;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
loadApps();
setContentView(R.layout.apps);
mGrid = (GridView) findViewById(R.id.app_grid);
mGrid.setAdapter(new AppsAdapter());
colors_app = getSharedPreferences("MyColor", 1);
int colorcode2 = colors_app.getInt("color_code", 0);
if (colorcode2 != 0) {
Apps.this.findViewById(R.id.apps_back).setBackgroundColor(
colorcode2);
}
}
private List<ResolveInfo> mApps;
private void loadApps() {
Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
mApps = getPackageManager().queryIntentActivities(mainIntent, 0);
}
public class AppsAdapter extends BaseAdapter {
public AppsAdapter() {
}
public View getView(int position, View convertView, ViewGroup parent) {
ImageView i;
if (convertView == null) {
i = new ImageView(Apps.this);
i.setScaleType(ImageView.ScaleType.FIT_CENTER);
i.setLayoutParams(new GridView.LayoutParams(90, 90));
i.setPadding(10, 10, 10, 10);
} else {
i = (ImageView) convertView;
}
ResolveInfo info = mApps.get(position);
i.setImageDrawable(info.activityInfo.loadIcon(getPackageManager()));
return i;
}
public final int getCount() {
return mApps.size();
}
public final Object getItem(int position) {
return mApps.get(position);
}
public final long getItemId(int position) {
return position;
}
}
}
答案 0 :(得分:2)
您的代码没有任何应该启动其他应用的内容。您需要添加一些代码来运行您在网格中显示的应用程序。您可以为OnItemClickListener
实施mGrid
,或为适配器内的每个OnClickListener
添加ImageView
。
@Override
public void onListItemClick(ListView l, View v, int position, long id) {
ResolveInfo resolveInfo = (ResolveInfo)l.getAdapter().getItem(position);
ActivityInfo activityInfo = resolveInfo.activityInfo;
if (activityInfo == null) return;
Intent i = new Intent(Intent.ACTION_MAIN);
i.setClassName(activityInfo.applicationInfo.packageName, activityInfo.name);
startActivity(i);
}
请记住,此代码应该与ListView
一起使用而不是GridView
,因此请确保为您的案例实现类似的功能。您已有一个ResolveInfo
个对象列表,因此您可以通过每个项目的位置使用它来访问每个应用的ActivityInfo
。
答案 1 :(得分:0)
我自己找到了答案:-)只需将此代码放在onCreate
setContentView
以下,就可以了!代码就像魅力一样!
mGrid.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View convertView,
int position, long id) {
ResolveInfo cleckedResolveInfo = (ResolveInfo) parent
.getItemAtPosition(position);
ActivityInfo clickedActivityInfo = cleckedResolveInfo.activityInfo;
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
intent.setClassName(
clickedActivityInfo.applicationInfo.packageName,
clickedActivityInfo.name);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK
| Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
startActivity(intent);
}
});