android 通过点击上下文菜单采用intent启动activity

客官°小女子只卖身不卖艺 2022-08-06 05:16 102阅读 0赞

编程小白一枚，如题，如何才能做到，我现在已经在app中添加了浮动的导航菜单，我希望在点击导航菜单的时候启动一个新的activity,但是下面的代码完成不了，请大神看一下

protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_activity_view);
     
        dataSource = new DBDataSource(this);
     
        dataSource.open();
     
        values = dataSource.getAllMahasiswa();
     
        ArrayAdapter<mahasiswa> adapter = new ArrayAdapter<mahasiswa>     (this, android.R.layout.simple_list_item_1, values);
     
        setListAdapter(adapter);
     
        listView=(ListView) findViewById(android.R.id.list);
        registerForContextMenu(listView);
     
     
     
    }
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
            super.onCreateContextMenu(menu, v, menuInfo);
     
            menu.add(0, 1000, 0, "Edit");
            menu.add(0, 1001, 0, "Hapus");
     
    }
     
    public boolean onContextMenuItemSelected(MenuItem item){
         switch (item.getItemId()) {
           case 1000:
               Intent i = new Intent(ActivityView.this, Tes.class);
     
               startActivity(i);
           break;
           case 1001:
              //not yet
           break;
           }
           return super.onContextItemSelected(item);
     
     }</mahasiswa></mahasiswa>

### 处理方法 ###

在android开发中共有两种方式完成，使用下面的2代码  
代码一  
@Override  
public boolean onContextItemSelected(MenuItem item)  
\{  
        switch (item.getItemId())  
        \{  
        case R.id.pick\_camera:

break;  
        \}  
    return super.onContextItemSelected(item);  
\}  
代码二  
@Override  
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo)  
    \{

getMenuInflater().inflate(R.menu.image\_options, menu);  
        super.onCreateContextMenu(menu, v, menuInfo);  
    \}

在 菜单资源路径创建image\_options.xml   
create image\_options.xml in menu folder of resource.  
<?xml version="1.0" encoding="utf-8"?>  
<menu xmlns:android="[http://schemas.android.com/apk/res/android][http_schemas.android.com_apk_res_android]" >

</menu>

原文地址：[http://www.itmmd.com/201411/149.html][http_www.itmmd.com_201411_149.html]   
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[http_schemas.android.com_apk_res_android]: http://schemas.android.com/apk/res/android
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