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MainActivity
package com.lib.listviewtest;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
private String[] data = { "Apple", "Banana", "Orange", "Watermelon",
"Pear", "Grape", "Pineapple", "Strawberry", "Cherry", "Mango",
"weijize1", "weijize2", "weijize3", "weijize4" };
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final 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);
listView.setOnItemClickListener(new android.widget.AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
setTitle("点击第"+(position+1)+"个项目");
//Toast.makeText(MainActivity.this, data[position], Toast.LENGTH_SHORT).show();
showToast(MainActivity.this, data[position], 500);
}
});
}
/*
*
* 显示toast,自己定义显示长短。
* param1:activity 传入context
* param2:word 我们需要显示的toast的内容
* param3:time length long类型,我们传入的时间长度(如500)
*/
public static void showToast(final Activity activity, final String word, final long time){
activity.runOnUiThread(new Runnable() {
public void run() {
final Toast toast = Toast.makeText(activity, word, Toast.LENGTH_LONG);
toast.show();
Handler handler = new android.os.Handler();
handler.postDelayed(new Runnable() {
public void run() {
toast.cancel();
}
}, time);
}
});
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.lib.listviewtest.MainActivity">
<ListView
android:id="@+id/list_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:text="Hello World!"/>
</LinearLayout>