android中自定义toast

最新推荐文章于 2024-11-24 11:10:55 发布

stonenotes123

最新推荐文章于 2024-11-24 11:10:55 发布

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分类专栏： android 技术点文章标签： android listview layout

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我想改变下toast的背景和文本颜色

用了下面的方法：

 
   
 LayoutInflater infator = getLayoutInflater(); 

 
   
 View layout =infator.inflate(R.layout.toast, (ViewGroup) findViewById(R.id.toast_layout)); 

 
   
 TextView toastText = (TextView) findViewById(R.id.toasttext); 

 
   
 toastText.setBackgroundColor(Color.YELLOW); 

 
   
 toastText.setText( 
 "uei:" 
 +o.getUei()); 

 
   
 Toast toast =  
 new 
 Toast(getApplicationContext()); 

 
 toast.setDuration(Toast.LENGTH_LONG); 

 
   
 toast.setView(layout); 

 
   
 toast.show(); 

 
 这个代码是我的listview的OnItemClickListener的，但是app由于空指针异常被强制关闭了
        
 这是onclick listener上面的代码：

 
   public 
  void 
   onCreate( 
  final 
  Bundle savedInstanceState) { 
 
  super 
  .onCreate(savedInstanceState); 
 
  setContentView(R.layout.alarms); 
 
  m_alarmAdapter =  
  new 
  AlarmAdapter( 
  this 
  , R.layout.severity_item, m_alarms); 
 
  setListAdapter(m_alarmAdapter); 
 
  ListView lv = getListView(); 
 
  lv.setOnItemClickListener( 
  new 
  OnItemClickListener() { 
 
  public 
  void 
   onItemClick( 
  final 
  AdapterView<?> parent,  
  final 
  View view,  
  final 
  int 
   position,  
  final 
  long 
   id) { 
 
  Log.d(TAG, 
  "clicked: " 
   + view); 
 
  final 
  Alarm o = m_alarmAdapter.getItem(position); 
 
  LayoutInflater infator = getLayoutInflater();