Question

我想填充点击列表视图中的项目时在新活动中打开的网格视图。如何实施？致力于Android应用开发

公共类MainActivity扩展了ActionBarActivity {

private List<cars> myCars=new ArrayList<cars>();



@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    populateCarsList();
    populateListView();
    registerClickCallback();
}





private void populateCarsList() {
    // TODO Auto-generated method stub
    myCars.add(new cars("Ford",1950,0,"Aman"));
    myCars.add(new cars("Honda",1951,0,"Akhil"));
    myCars.add(new cars("Fiat",1952,0,"Anil"));
    myCars.add(new cars("Mahindra",1953,0,"Ankit"));
    myCars.add(new cars("Maruti",1954,0,"Venu"));
    myCars.add(new cars("Hyundai",1955,0,"Neeta"));
    myCars.add(new cars("Toyota",1956,0,"Naresh"));
    myCars.add(new cars("BMW",1957,0,"Amit"));
    myCars.add(new cars("Merc",1958,0,"Arjun"));
    myCars.add(new cars("Jaguar",1959,0,"Akshit"));
}



private void populateListView() {

ArrayAdapter<cars> adapter=new  AmanListAdapter();
ListView list=(ListView) findViewById(R.id.carsListView);
list.setAdapter(adapter);

}


private void registerClickCallback() {
    ListView list=(ListView) findViewById(R.id.carsListView);
    list.setOnItemClickListener(new AdapterView.OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> parent, View viewClicked,int position, long id) 
        {
            cars clickedCar=myCars.get(position);
            String message="You clicked position "+position+" which is "+clickedCar.getMake();
            Toast.makeText(MainActivity.this,message,Toast.LENGTH_LONG).show();

            if(position==0)
            {


                startActivity(new Intent(MainActivity.this,GridView1Activity.class));




        }
            else
            {
                startActivity(new Intent(MainActivity.this,GridView2Activity.class));
            }

        }
    });

}


private class AmanListAdapter extends ArrayAdapter<cars>
{
    public AmanListAdapter(){
        super(MainActivity.this,R.layout.item_view,myCars);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub

        View itemView=convertView;
        if(itemView==null)
            itemView=getLayoutInflater().inflate(R.layout.item_view,parent,false);


        //Find the car to work with
        cars currentCar=myCars.get(position);

        //Fill the view
        ImageView imageView=(ImageView)itemView.findViewById(R.id.item_Icon);
        imageView.setImageResource(currentCar.geticonID());

        //Make
        TextView makeText=(TextView) itemView.findViewById(R.id.item_txtMake);
        makeText.setText(currentCar.getMake());

        //Year
        TextView yearText=(TextView) itemView.findViewById(R.id.item_txtYear);
        yearText.setText(""+currentCar.getYear());

        //Condition
        TextView conditionText=(TextView) itemView.findViewById(R.id.item_txtCondition);
        conditionText.setText(currentCar.getCondition());


        return itemView;
    }




}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();
    if (id == R.id.action_settings) {
        return true;`enter code here`
    }
    return super.onOptionsItemSelected(item);
}

}

Answer 1

在listView的项目上设置clickListener。
创建新活动并将id（使用意图）传递给新活动。
使用ID填充新活动。

您可以使用自定义适配器。

如果您不熟悉Android，请先阅读一些基本教程。

如何在单击ListView中的项目时填充新打开的网格视图

1 个答案: