Android开发—弹出列表、单选、多选框
16lz
2021-01-23
效果图如下：
需要建一个menu
xml布局如下：
<?xml version="1.0" encoding="utf-8"?> Java代码如下：
import android.content.DialogInterface;import android.support.v7.app.AlertDialog;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.Menu;import android.view.View;import android.widget.Button;import android.widget.Toast; public class MainActivity extends AppCompatActivity { private AlertDialog alertDialog1; //信息框 private AlertDialog alertDialog2; //单选框 private AlertDialog alertDialog3; //多选框 private Button button1; private Button button2; private Button button3; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); init(); } public void init(){ button1 = (Button) findViewById(R.id.button1); button2 = (Button) findViewById(R.id.button2); button3 = (Button) findViewById(R.id.button3); } //@Override //public boolean onCreateOptionsMenu(Menu menu) { // getMenuInflater().inflate(R.menu.mian, menu); // return true; //} public void showList(View view){ final String[] items = {"列表1", "列表2", "列表3", "列表4"}; AlertDialog.Builder alertBuilder = new AlertDialog.Builder(this); alertBuilder.setTitle("这是列表框"); alertBuilder.setItems(items, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { Toast.makeText(MainActivity.this, items[i], Toast.LENGTH_SHORT).show(); alertDialog1.dismiss(); } }); alertDialog1 = alertBuilder.create(); alertDialog1.show(); } public void showSingleAlertDialog(View view){ final String[] items = {"单选1", "单选2", "单选3", "单选4"}; AlertDialog.Builder alertBuilder = new AlertDialog.Builder(this); alertBuilder.setTitle("这是单选框"); alertBuilder.setSingleChoiceItems(items, 0, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { Toast.makeText(MainActivity.this, items[i], Toast.LENGTH_SHORT).show(); } }); alertBuilder.setPositiveButton("确定", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { alertDialog2.dismiss(); } }); alertBuilder.setNegativeButton("取消", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { alertDialog2.dismiss(); } }); alertDialog2 = alertBuilder.create(); alertDialog2.show(); } public void showMutilAlertDialog(View view){ final String[] items = {"多选1", "多选2", "多选3", "多选4"}; AlertDialog.Builder alertBuilder = new AlertDialog.Builder(this); alertBuilder.setTitle("这是多选框"); /** *第一个参数:弹出框的消息集合，一般为字符串集合 * 第二个参数：默认被选中的，布尔类数组 * 第三个参数：勾选事件监听 */ alertBuilder.setMultiChoiceItems(items, null, new DialogInterface.OnMultiChoiceClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i, boolean isChecked) { if (isChecked){ Toast.makeText(MainActivity.this, "选择" + items[i], Toast.LENGTH_SHORT).show(); }else { Toast.makeText(MainActivity.this, "取消选择" + items[i], Toast.LENGTH_SHORT).show(); } } }); alertBuilder.setPositiveButton("确定", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { alertDialog3.dismiss(); } }); alertBuilder.setNegativeButton("取消", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { alertDialog3.dismiss(); } }); alertDialog3 = alertBuilder.create(); alertDialog3.show(); }}
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