安卓点击事件问题

Question

// 添加TextView控件
     for(int i = 0;i < menus.length;i++){
     TextView tvMenu = new TextView(this);
tvMenu.setLayoutParams(new LayoutParams(30,30)); 
tvMenu.setPadding(30, 14, 30, 10);
tvMenu.setText(menus[i]);
tvMenu.setTextColor(Color.WHITE);
tvMenu.setGravity(Gravity.CENTER_HORIZONTAL);
menuLinerLayout.addView(tvMenu,menuLinerLayoutParames);
tvMenu.setOnClickListener(SlideMenuOnClickListener);
menuList.add(tvMenu);
        }// 单个菜单事件
OnClickListener SlideMenuOnClickListener = new OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
String menuTag =v.getText().toString();
new AlertDialog.Builder(MainActivity.this)
.setTitle("")
.setMessage(menuTag)
.setPositiveButton("确定" ,  null )
.show();}
为什么程序运行到String menuTag =v.getText().toString();这句就提示停止运行然后就退出AndroidJavatextview控件

Answer 1

你试一下需不需要强制类型转换，转换成TextView对象，然后再v.getText()

Answer 2

怎么转换？我第一次写java啊

Answer 3

v.getText()??没看到你setText

Answer 4

Activity文件：package com.example.test;import android.app.Activity;
import android.app.AlertDialog;
import android.graphics.Color;
import android.os.Bundle;
import android.view.Gravity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.LinearLayout;
import android.widget.LinearLayout.LayoutParams;
import android.widget.TextView;
public class MainActivity extends Activity { @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
String[] menus = {"test1", "test2"};
LinearLayout menuLinerLayout = (LinearLayout) findViewById(R.id.ll_main);
        // 参数设置
        LinearLayout.LayoutParams menuLinerLayoutParames = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.WRAP_CONTENT, 
                LinearLayout.LayoutParams.WRAP_CONTENT);
for(int i = 0;i < menus.length;i++){
            TextView tvMenu = new TextView(this);
            tvMenu.setLayoutParams(new LayoutParams(30,30)); 
            tvMenu.setPadding(30, 14, 30, 10);
            tvMenu.setText(menus[i]);
            tvMenu.setTextColor(Color.RED);
            tvMenu.setGravity(Gravity.CENTER_HORIZONTAL);
            menuLinerLayout.addView(tvMenu,menuLinerLayoutParames);
            tvMenu.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
 // TODO Auto-generated method stub
               
    TextView textView = (TextView)v; 
    String menuTag =textView.getText().toString();
                new AlertDialog.Builder(MainActivity.this)
                .setTitle("")
                .setMessage(menuTag)
                .setPositiveButton("确定" ,  null )
                .show();
}
});
}
}
}
xml文件：
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    android:id="@+id/ll_main" ></LinearLayout>运行结果：这是我刚才写的，你粘贴过去试一下。

Answer 5

package com.example.test;import android.app.Activity;
import android.app.AlertDialog;
import android.graphics.Color;
import android.os.Bundle;
import android.view.Gravity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.LinearLayout;
import android.widget.LinearLayout.LayoutParams;
import android.widget.TextView;
public class MainActivity extends Activity { @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
String[] menus = {"test1", "test2"};
LinearLayout menuLinerLayout = (LinearLayout) findViewById(R.id.ll_main);
        // 参数设置
        LinearLayout.LayoutParams menuLinerLayoutParames = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.WRAP_CONTENT, 
                LinearLayout.LayoutParams.WRAP_CONTENT);
for(int i = 0;i < menus.length;i++){
            TextView tvMenu = new TextView(this);
            tvMenu.setLayoutParams(new LayoutParams(30,30)); 
            tvMenu.setPadding(30, 14, 30, 10);
            tvMenu.setText(menus[i]);
            tvMenu.setTextColor(Color.RED);
            tvMenu.setGravity(Gravity.CENTER_HORIZONTAL);
            menuLinerLayout.addView(tvMenu,menuLinerLayoutParames);
            tvMenu.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
 // TODO Auto-generated method stub
               
    TextView textView = (TextView)v; 
    String menuTag =textView.getText().toString();
                new AlertDialog.Builder(MainActivity.this)
                .setTitle("")
                .setMessage(menuTag)
                .setPositiveButton("确定" ,  null )
                .show();
}
});
}
}
}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    android:id="@+id/ll_main" ></LinearLayout><?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.test"
    android:versionCode="1"
    android:versionName="1.0" >    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.test.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application></manifest>

Answer 6

源代码下载http://download.csdn.net/detail/lxq_xsyu/5873443