main.xml代码如下：
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><Button android:id="@+id/btn_long"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="长时间显示Toast"/><Button android:id="@+id/btn_short"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="短时间显示Toast"/></LinearLayout>
.java代码如下：
package org.lxh.demo;import android.app.Activity;import android.app.AlertDialog;import android.app.Dialog;import android.app.ProgressDialog;import android.content.DialogInterface;import android.os.Bundle;import android.text.method.ScrollingMovementMethod;import android.view.LayoutInflater;import android.view.View;import android.view.View.OnClickListener;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.AdapterView.OnItemSelectedListener;import android.widget.Button;import android.widget.SeekBar;import android.widget.SeekBar.OnSeekBarChangeListener;import android.widget.Spinner;import android.widget.TextView;import android.widget.Toast;public class Hello extends Activity {private Button btn_long = null;private Button btn_short = null;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState); // 生命周期方法super.setContentView(R.layout.main); // 设置要使用的布局管理器this.btn_long = (Button) super.findViewById(R.id.btn_long);this.btn_short = (Button) super.findViewById(R.id.btn_short);this.btn_long.setOnClickListener(new OnClickListenerLong());this.btn_short.setOnClickListener(new OnClickListenerShort());}private class OnClickListenerLong implements OnClickListener {public void onClick(View view) {Toast.makeText(Hello.this, "长时间显示Toast提示信息框", Toast.LENGTH_LONG).show();}}private class OnClickListenerShort implements OnClickListener {public void onClick(View view) {Toast.makeText(Hello.this, "短时间显示Toast提示信息框", Toast.LENGTH_SHORT).show();}}}
运行效果如下：
