第一行代码--笔记（3）

AlertDialog的使用

AlertDialog.Builder dialog = new AlertDialog.Builder(MainActivity.this);
dialog.setTitle("This is Dialog");
dialog.setMessage("Something important.");
dialog.setCancelable(false);
dialog.setPositiveButton("OK", new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialog, int which) {
    }
});
dialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialog, int which) {
    }
});
dialog.show();

ProgressDialog的使用

ProgressDialog progressDialog = new ProgressDialog(MainActivity.this);
progressDialog.setTitle("This is ProgressDialog");
progressDialog.setMessage("Loading...");
progressDialog.setCancelable(true);
progressDialog.show();

包含住一个常用的布局......

<include layout="@layout/title" />

创建自定义控件

public class TitleLayout extends LinearLayout {
    public TitleLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
        LayoutInflater.from(context).inflate(R.layout.title, this);
    }
}

ListView的使用

private String[] data = { "Apple", "Banana", "Orange", "Watermelon","Pear", "Grape", "Pineapple", "Strawberry", "Cherry", "Mango" };

ArrayAdapter<String> adapter = new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_list_item_1, data);

ListView listView = (ListView) findViewById(R.id.list_view);

listView.setAdapter(adapter);

目前看到书的131页，明天继续