Android菜单项

Question

当我从菜单中选择一个选项时，我正在尝试加载活动：

@Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch(item.getItemId()) {
        case R.id.menu_flash:
            Intent intent = new Intent(this, FlashActivity.class);
            this.startActivity(intent);
            break;
        case R.id.menu_color:
            Intent intent = new Intent(this, FlashActivity.class);
            this.startActivity(intent);
            break;          break;
        default:
            return super.onOptionsItemSelected(item);
        }

        return true;

}

但它一直给我意图错误

Answer 1

 Intent intent = new Intent(youractivity.this, FlashActivity.class);
 startActivity(intent);

更改为上面的代码......

Answer 2

确保FlashActivity在清单文件中声明。然后试试..

  public boolean onOptionsItemSelected(MenuItem item) {
    switch(item.getItemId()) {
    case R.id.menu_flash:
        openFlashmenu();
         return true;
    case R.id.menu_color:
        openFlashmenu();
        return true;
    default:
        return super.onOptionsItemSelected(item);
    }

}

 public void openFlashmenu(){
        Intent intent = new Intent(this, FlashActivity.class);
        this.startActivity(intent);
         }

Answer 3

public boolean onOptionsItemSelected(MenuItem item){
    switch(item.getItemId()){
    case R.id.menu_flash:
        Intent intent = new Intent(this, FlashActivity.class);
        startActivity(intent);
        return true;
    }
    return false;

Answer 4

改变：

@Override
   public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
      case R.id.item1:
             Intent intent = new Intent(this, FlashActivity.class);
             this.startActivity(intent);;

            return true;
       case R.id.item2:
            Intent intent = new Intent(this, FlashActivity.class);
            this.startActivity(intent);

           return true;
        default:
           return super.onContextItemSelected(item);
       }
   }

Answer 5

您是否在清单文件中声明了FlashActivity？

如果没有，请将其添加到您的清单中：

    <activity
        android:name=".FlashActivity" >
    </activity>