Android:按钮的GridView,但按钮没有响应
我在GridView上有一个非常基本的程序,带有一些按钮,如下代码所示。程序运行良好,按钮显示在网格中,但当我单击时,它们没有响应。如果我将代码更改为图像的gridview,它可以正常工作。我相信我在Android:按钮的GridView,但按钮没有响应,android,button,gridview,Android,Button,Gridview,我在GridView上有一个非常基本的程序,带有一些按钮,如下代码所示。程序运行良好,按钮显示在网格中,但当我单击时,它们没有响应。如果我将代码更改为图像的gridview,它可以正常工作。我相信我在gridView.setOnItemClickListener或公共视图getView()中的某个地方错了。艾恩建议?谢谢 public class MainActivity extends Activity { public String[] filenames ={"B1","B2","
gridView.setOnItemClickListener
或公共视图getView()中的某个地方错了。艾恩建议?谢谢
public class MainActivity extends Activity {
public String[] filenames ={"B1","B2","B3","B4","B5","B6"};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
GridView gridView = (GridView) findViewById(R.id.gridview);
gridView.setAdapter(new ButtonAdapter(this));
gridView.setOnItemClickListener(new OnItemClickListener(){
public void onItemClick(AdapterView<?> parent,
View v, int position, long id){
Toast.makeText(getBaseContext(),
"pic" + (position + 1) + " selected",
Toast.LENGTH_SHORT).show();
}
});
}
public class ButtonAdapter extends BaseAdapter {
private Context context;
public ButtonAdapter(Context c){
context = c;
}
public int getCount() {
return filenames.length;
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent){
Button btn;
if (convertView == null) {
btn = new Button(context);
btn.setLayoutParams(new GridView.LayoutParams(100, 100));
btn.setPadding(8, 8, 8, 8);
}else {
btn = (Button) convertView;
}
btn.setText(filenames[position]);
btn.setTextColor(Color.WHITE);
btn.setId(position);
return btn;
}
}
}
公共类MainActivity扩展活动{
公共字符串[]文件名={“B1”、“B2”、“B3”、“B4”、“B5”、“B6”};
@凌驾
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
GridView GridView=(GridView)findViewById(R.id.GridView);
setAdapter(新按钮适配器(this));
setOnItemClickListener(新的OnItemClickListener(){
公共无效MClick(AdapterView父级、,
视图v,整数位置,长id){
Toast.makeText(getBaseContext(),
“pic”+(位置+1)+“已选定”,
吐司。长度(短)。show();
}
});
}
公共类ButtonAdapter扩展BaseAdapter{
私人语境;
公共按钮适配器(上下文c){
上下文=c;
}
public int getCount(){
返回filenames.length;
}
公共对象getItem(int位置){
返回位置;
}
公共长getItemId(int位置){
返回位置;
}
公共视图getView(int位置、视图转换视图、视图组父视图){
按钮btn;
如果(convertView==null){
btn=新按钮(上下文);
btn.setLayoutParams(新的GridView.LayoutParams(100100));
btn.设置填充(8,8,8,8);
}否则{
btn=(按钮)转换视图;
}
btn.setText(文件名[位置]);
btn.setTextColor(颜色为白色);
btn.setId(位置);
返回btn;
}
}
}
您需要将按钮属性设置为可聚焦和可单击为false。因为在当前情况下,焦点和单击事件由按钮捕获,而不是在网格视图项上。将代码更改为以下内容:
public class MainActivity extends Activity {
public String[] filenames ={"B1","B2","B3","B4","B5","B6"};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
GridView gridView = (GridView) findViewById(R.id.gridview);
gridView.setAdapter(new ButtonAdapter(this));
gridView.setOnItemClickListener(new OnItemClickListener(){
public void onItemClick(AdapterView<?> parent,
View v, int position, long id){
Toast.makeText(getBaseContext(),
"pic" + (position + 1) + " selected",
Toast.LENGTH_SHORT).show();
}
});
}
public class ButtonAdapter extends BaseAdapter {
private Context context;
public ButtonAdapter(Context c){
context = c;
}
public int getCount() {
return filenames.length;
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent){
Button btn;
if (convertView == null) {
btn = new Button(context);
btn.setLayoutParams(new GridView.LayoutParams(100, 100));
btn.setPadding(8, 8, 8, 8);
btn.setFOcusable(false);
btn.setClickable(false);
}else {
btn = (Button) convertView;
}
btn.setText(filenames[position]);
btn.setTextColor(Color.WHITE);
btn.setId(position);
return btn;
}
}
}
公共类MainActivity扩展活动{
公共字符串[]文件名={“B1”、“B2”、“B3”、“B4”、“B5”、“B6”};
@凌驾
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
GridView GridView=(GridView)findViewById(R.id.GridView);
setAdapter(新按钮适配器(this));
setOnItemClickListener(新的OnItemClickListener(){
公共无效MClick(AdapterView父级、,
视图v,整数位置,长id){
Toast.makeText(getBaseContext(),
“pic”+(位置+1)+“已选定”,
吐司。长度(短)。show();
}
});
}
公共类ButtonAdapter扩展BaseAdapter{
私人语境;
公共按钮适配器(上下文c){
上下文=c;
}
public int getCount(){
返回filenames.length;
}
公共对象getItem(int位置){
返回位置;
}
公共长getItemId(int位置){
返回位置;
}
公共视图getView(int位置、视图转换视图、视图组父视图){
按钮btn;
如果(convertView==null){
btn=新按钮(上下文);
btn.setLayoutParams(新的GridView.LayoutParams(100100));
btn.设置填充(8,8,8,8);
btn.setFOcusable(假);
btn.可设置可点击(错误);
}否则{
btn=(按钮)转换视图;
}
btn.setText(文件名[位置]);
btn.setTextColor(颜色为白色);
btn.setId(位置);
返回btn;
}
}
}
您需要将按钮属性设置为可聚焦和可单击为false。因为在当前情况下,焦点和单击事件由按钮捕获,而不是在网格视图项上。将代码更改为以下内容:
public class MainActivity extends Activity {
public String[] filenames ={"B1","B2","B3","B4","B5","B6"};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
GridView gridView = (GridView) findViewById(R.id.gridview);
gridView.setAdapter(new ButtonAdapter(this));
gridView.setOnItemClickListener(new OnItemClickListener(){
public void onItemClick(AdapterView<?> parent,
View v, int position, long id){
Toast.makeText(getBaseContext(),
"pic" + (position + 1) + " selected",
Toast.LENGTH_SHORT).show();
}
});
}
public class ButtonAdapter extends BaseAdapter {
private Context context;
public ButtonAdapter(Context c){
context = c;
}
public int getCount() {
return filenames.length;
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent){
Button btn;
if (convertView == null) {
btn = new Button(context);
btn.setLayoutParams(new GridView.LayoutParams(100, 100));
btn.setPadding(8, 8, 8, 8);
btn.setFOcusable(false);
btn.setClickable(false);
}else {
btn = (Button) convertView;
}
btn.setText(filenames[position]);
btn.setTextColor(Color.WHITE);
btn.setId(position);
return btn;
}
}
}
公共类MainActivity扩展活动{
公共字符串[]文件名={“B1”、“B2”、“B3”、“B4”、“B5”、“B6”};
@凌驾
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
GridView GridView=(GridView)findViewById(R.id.GridView);
setAdapter(新按钮适配器(this));
setOnItemClickListener(新的OnItemClickListener(){
公共无效MClick(AdapterView父级、,
视图v,整数位置,长id){
Toast.makeText(getBaseContext(),
“pic”+(位置+1)+“已选定”,
吐司。长度(短)。show();
}
});
}
公共类ButtonAdapter扩展BaseAdapter{
私人语境;
公共按钮适配器(上下文c){
上下文=c;
}
public int getCount(){
返回filenames.length;
}
公共对象getItem(int位置){
返回位置;
}
公共长getItemId(int位置){
返回位置;
}
公共视图getView(int位置、视图转换视图、视图组父视图){
按钮btn;