如何在Android Studio中比较列表中的项目？

debugcn 发表于 Dev

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我应该在If Block中添加什么以便它可以比较两个项目？我的意思是，当我单击“法国”列表项时，我想打开“法国”活动，但是当我搜索另一个国家（例如美国）时，我想打开它，因此它会过滤顶部和底部的“美国”和“美国”显示。美国它将在法国开展活动。所以我想在if语句中将法国列表项与列表中的第一个列表项进行比较，如果它是法国，它将打开“法国活动”！

SearchView searchView;
    ListView listView;

    String[] list = {"France","United States","Spain","China","Italy","United Kingdom","Germany","Mexico","Thailand","Turkey","Austria",
            "Malaysia","Hong Kong","Greece","Russia","Japan","Canada","Saudi Arabia","Poland","South Korea","Netherlands"};
    ArrayAdapter<String> adapter;

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

        searchView  = (SearchView)findViewById(R.id.search_View);
        listView = (ListView)findViewById(R.id.search_list);

        adapter = new ArrayAdapter<>(this,android.R.layout.simple_list_item_1,list);
        listView.setAdapter(adapter);

        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {

                 if(What should put here?){
                        Intent intent = new Intent(view.getContext(),France.class);
                        startActivity(intent);
                    }
            }
        });

        searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
            @Override
            public boolean onQueryTextSubmit(String query) {
                return false;
            }

            @Override
            public boolean onQueryTextChange(String newText) {

                adapter.getFilter().filter(newText);

                return false;
            }
        });
    }

阿里王子

获取ListView的项目位置：

listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {

                 String str = listView.getAdapter().getItem(i).toString();
                    if ( str.equals("France")) {
                        showToast("France clicked");
                    }
            }
        });

private void showToast(String str) {
        Toast.makeText(getApplicationContext(), str, Toast.LENGTH_SHORT).show();
    }

您也可以将其else if用于其他字符串。

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