Android 警报对话框问题
为什么我的程序在点击“测试”按钮(在菜单区创建)时崩溃。。我在Nexus5(Android 4.4.4)上运行我的程序 代码如下:Android 警报对话框问题,android,android-alertdialog,builder,Android,Android Alertdialog,Builder,为什么我的程序在点击“测试”按钮(在菜单区创建)时崩溃。。我在Nexus5(Android 4.4.4)上运行我的程序 代码如下: public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so lo
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
if(id == R.id.menu_test){
AlertDialog.Builder builder = new AlertDialog.Builder(null);
builder.setMessage(R.string.dialog_m).setTitle(R.string.dialog_t);
AlertDialog dialog = builder.create();
dialog.show();
return true;
}
return super.onOptionsItemSelected(item);
}
AlertDialog.Builder
需要一个上下文。您当前正在传入null
。将代码更改为:
AlertDialog.Builder builder = new AlertDialog.Builder(this);
什么是碰撞日志?以下是检查LogCat的说明: