如何使自动完成预测可点击？

Question

当我输入内容时，我会得到一个自动完成预测。就像当我输入“Joh”时，我得到“John F. Kennedy”。现在，如果用户点击“John F. Kennedy”，它会将他带入一个活动，该活动向他提供有关 John F. Kennedy 的信息。我应该怎么做才能得到这个？如何使自动完成预测可点击？

package com.mavenmaverick.autocomplete_test;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;


public class MainActivity extends Activity {

String[] presidents= { "John F. Kennedy",
                    "Lyndon B. Johnson",
                    "Richard Nixon",
                    "Gerald Ford",
                    "Jimmy Carter",
                    "Ronald Reagan",
                    "George H. W. Bush",
                    "Bill Clinton",
                    "George W. Bush",
                    "Barack Obama"
                    };

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    AutoCompleteTextView textView = (AutoCompleteTextView) findViewById(R.id.autoCompleteTextView1);
    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.select_dialog_item, presidents);

    textView.setThreshold(3);
    textView.setAdapter(adapter);

}

}

Answer 1

使用此代码。

String[] presidents= { "John F. Kennedy",
                    "Lyndon B. Johnson",
                    "Richard Nixon",
                    "Gerald Ford",
                    "Jimmy Carter",
                    "Ronald Reagan",
                    "George H. W. Bush",
                    "Bill Clinton",
                    "George W. Bush",
                    "Barack Obama"
                    };
private AutoCompleteTextView myAutoComplete;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

        myAutoComplete = (AutoCompleteTextView) findViewById(R.id.myautocomplete);
        myAutoComplete.addTextChangedListener(this);
        myAutoComplete.setAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_dropdown_item_1line, presidents));



myAutoComplete.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View arg0) {
                Intent intent = new Intent(getBaseContext(), InforActivity.class);
                    intent.putExtra("president_name", obj.toString());
                    startActivity(intent);
                    finish();

            }
        });

}

Answer 2

你可以试试下面的代码，

autoCompleteTextview.setOnItemClickListener(new OnItemClickListener() {
    @Override
    public void onItemClick (AdapterView<?> parent, View view, int position, long id) {
        //... your stuff
    }
})

您还有一个选择，当用户使用 setOnItemSelectedListener 实际选择下拉列表中的项目时设置点击侦听器。

autoCompleteTextview.setOnSelectedListener(new OnItemClickListener() {
    @Override
    public void onItemSelected (AdapterView<?> parent, View view, int position, long id) {
        //... your stuff
    }
});

编辑

if(position == 1){
Intent i = new Intent (MainActivity.this, johncanedy.class);
startActivity(i);
}else if (position == 2){
Intent i = new Intent (MainActivity.this, lyndon.class);
startActivity(i);
} 

等等……