android 自学笔记

  今日学习了Android常用的控件

1. TextView

    <TextView         android:id="@+id/text_view"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:gravity="center"         android:textSize="24sp"         android:textColor="#00ff00"         android:text="This is TextView" />

2.Button

<Button          android:id="@+id/button"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:text="Button" />

3.EditText

    <EditText          android:id="@+id/edit_text"         android:layout_width="match_parent"         android:layout_height="wrap_content"	android:hint="Type something here"	android:maxLines="2"         />

4.ImageView

    <ImageView          android:id="@+id/p_w_picpath_view"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:src="@drawable/ic_launcher"         />

5.ProgressBar

        <ProgressBar          android:id="@+id/progress_bar"         android:layout_width="match_parent"         android:layout_height="wrap_content"         style = "?android:attr/progressBarStyleHorizontal"         android:max="100"         />

6.AlertDialog

AlertDialog.Builder dialog = new AlertDialog.Builder(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) {	// TODO 自动生成的方法存根	}	});	dialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {	@Override	public void onClick(DialogInterface arg0, int arg1) {	// TODO 自动生成的方法存根	}	});	dialog.show(); 

7.ProgressDialog

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

常用属性可查。