示例代码如下所示
您无需更改为大写。如下使用equalsIgnoreCase，
public boolean checkString(String value)
{
boolean found = false;
for(String searchcontent:searchNames)
{
if((searchcontent).equalsIgnoreCase(value))
{
found = true;
break;
}
}
return found;
}
完整代码如下，
MainActivity.java
package com.example.userinput;
import java.util.ArrayList;
import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity {
private ArrayList<String> searchNames = new ArrayList<String>();
EditText nameCaptureNo;
EditText nameCaptureUz;
Button send;
TextView tvTi;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
nameCaptureNo = (EditText) findViewById(R.id.nameCaptureNo);
nameCaptureUz = (EditText) findViewById(R.id.nameCaptureUz);
nameCaptureNo.addTextChangedListener(new TextWatcher()
{
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
Log.d("MainActivity", "Text Modified "+ nameCaptureNo.getText().toString());
}
@Override
public void onTextChanged(CharSequence s, int start, int before,
int count) {
Log.d("MainActivity", "Text Modified "+ nameCaptureNo.getText().toString());
if(checkString(nameCaptureNo.getText().toString()))
{
send.setVisibility(View.VISIBLE);
}
else
{
send.setVisibility(View.INVISIBLE);
//warning
tvTi.setText("Izvēlies pilsētu no saraksta!");
tvTi.setTextColor(Color.RED);
}
}
@Override
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
Log.d("MainActivity", "Text Modified "+ nameCaptureNo.getText().toString());
}
});
send = (Button) findViewById(R.id.send);
//Set the send button invisible
send.setVisibility(View.INVISIBLE);
tvTi = (TextView) findViewById(R.id.tvTi);
searchNames.add("Test1");
searchNames.add("Test2");
searchNames.add("Test3");
searchNames.add("Test4");
searchNames.add("Test5");
searchNames.add("Test6");
}
public boolean checkString(String value)
{
boolean found = false;
for(String searchcontent:searchNames)
{
if((searchcontent).equalsIgnoreCase(value))
{
found = true;
break;
}
}
return found;
}
}
activity_main.xml
<RelativeLayout 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"
tools:context="${packageName}.${activityClass}" >
<TextView
android:id="@+id/tvTi"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world"
android:textSize="30dp" />
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/tvTi"
android:layout_marginTop="36dp"
android:text="nameCaptureNo"
android:textAppearance="?android:attr/textAppearanceSmall" />
<TextView
android:id="@+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/textView1"
android:layout_marginTop="32dp"
android:text="nameCaptureUz"
android:textAppearance="?android:attr/textAppearanceSmall" />
<EditText
android:id="@+id/nameCaptureUz"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/textView3"
android:layout_alignBottom="@+id/textView3"
android:layout_alignLeft="@+id/nameCaptureNo"
android:layout_marginLeft="16dp"
android:ems="10" />
<Button
android:id="@+id/send"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/nameCaptureUz"
android:layout_marginLeft="40dp"
android:layout_marginTop="30dp"
android:text="Send" />
<EditText
android:id="@+id/nameCaptureNo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/textView1"
android:layout_alignBottom="@+id/textView1"
android:layout_alignParentRight="true"
android:ems="10" />
</RelativeLayout>
字符串.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">UserInput</string>
<string name="hello_world">TextView tvTi</string>
</resources>